Name
create_planar_uncalib_deformable_modelT_create_planar_uncalib_deformable_modelCreatePlanarUncalibDeformableModelcreate_planar_uncalib_deformable_modelCreatePlanarUncalibDeformableModelCreatePlanarUncalibDeformableModel — Creates a deformable model for uncalibrated, perspective matching.
create_planar_uncalib_deformable_model(Template : : NumLevels, AngleStart, AngleExtent, AngleStep, ScaleRMin, ScaleRMax, ScaleRStep, ScaleCMin, ScaleCMax, ScaleCStep, Optimization, Metric, Contrast, MinContrast, ParamName, ParamValue : ModelID)
Herror T_create_planar_uncalib_deformable_model(const Hobject Template, const Htuple NumLevels, const Htuple AngleStart, const Htuple AngleExtent, const Htuple AngleStep, const Htuple ScaleRMin, const Htuple ScaleRMax, const Htuple ScaleRStep, const Htuple ScaleCMin, const Htuple ScaleCMax, const Htuple ScaleCStep, const Htuple Optimization, const Htuple Metric, const Htuple Contrast, const Htuple MinContrast, const Htuple ParamName, const Htuple ParamValue, Htuple* ModelID)
Herror create_planar_uncalib_deformable_model(Hobject Template, const HTuple& NumLevels, const HTuple& AngleStart, const HTuple& AngleExtent, const HTuple& AngleStep, const HTuple& ScaleRMin, const HTuple& ScaleRMax, const HTuple& ScaleRStep, const HTuple& ScaleCMin, const HTuple& ScaleCMax, const HTuple& ScaleCStep, const HTuple& Optimization, const HTuple& Metric, const HTuple& Contrast, const HTuple& MinContrast, const HTuple& ParamName, const HTuple& ParamValue, Hlong* ModelID)
HDeformableModel HImage::CreatePlanarUncalibDeformableModel(const HTuple& NumLevels, const HTuple& AngleStart, const HTuple& AngleExtent, const HTuple& AngleStep, const HTuple& ScaleRMin, const HTuple& ScaleRMax, const HTuple& ScaleRStep, const HTuple& ScaleCMin, const HTuple& ScaleCMax, const HTuple& ScaleCStep, const HTuple& Optimization, const HTuple& Metric, const HTuple& Contrast, const HTuple& MinContrast, const HTuple& ParamName, const HTuple& ParamValue) const
void HDeformableModel::CreatePlanarUncalibDeformableModel(const HImage& Template, const HTuple& NumLevels, const HTuple& AngleStart, const HTuple& AngleExtent, const HTuple& AngleStep, const HTuple& ScaleRMin, const HTuple& ScaleRMax, const HTuple& ScaleRStep, const HTuple& ScaleCMin, const HTuple& ScaleCMax, const HTuple& ScaleCStep, const HTuple& Optimization, const HTuple& Metric, const HTuple& Contrast, const HTuple& MinContrast, const HTuple& ParamName, const HTuple& ParamValue)
void CreatePlanarUncalibDeformableModel(const HObject& Template, const HTuple& NumLevels, const HTuple& AngleStart, const HTuple& AngleExtent, const HTuple& AngleStep, const HTuple& ScaleRMin, const HTuple& ScaleRMax, const HTuple& ScaleRStep, const HTuple& ScaleCMin, const HTuple& ScaleCMax, const HTuple& ScaleCStep, const HTuple& Optimization, const HTuple& Metric, const HTuple& Contrast, const HTuple& MinContrast, const HTuple& ParamName, const HTuple& ParamValue, HTuple* ModelID)
void HDeformableModel::HDeformableModel(const HImage& Template, const HTuple& NumLevels, double AngleStart, double AngleExtent, const HTuple& AngleStep, double ScaleRMin, double ScaleRMax, const HTuple& ScaleRStep, double ScaleCMin, double ScaleCMax, const HTuple& ScaleCStep, const HTuple& Optimization, const HString& Metric, const HTuple& Contrast, const HTuple& MinContrast, const HTuple& ParamName, const HTuple& ParamValue)
void HDeformableModel::HDeformableModel(const HImage& Template, Hlong NumLevels, double AngleStart, double AngleExtent, double AngleStep, double ScaleRMin, double ScaleRMax, double ScaleRStep, double ScaleCMin, double ScaleCMax, double ScaleCStep, const HString& Optimization, const HString& Metric, const HTuple& Contrast, Hlong MinContrast, const HTuple& ParamName, const HTuple& ParamValue)
void HDeformableModel::HDeformableModel(const HImage& Template, Hlong NumLevels, double AngleStart, double AngleExtent, double AngleStep, double ScaleRMin, double ScaleRMax, double ScaleRStep, double ScaleCMin, double ScaleCMax, double ScaleCStep, const char* Optimization, const char* Metric, const HTuple& Contrast, Hlong MinContrast, const HTuple& ParamName, const HTuple& ParamValue)
void HDeformableModel::CreatePlanarUncalibDeformableModel(const HImage& Template, const HTuple& NumLevels, double AngleStart, double AngleExtent, const HTuple& AngleStep, double ScaleRMin, double ScaleRMax, const HTuple& ScaleRStep, double ScaleCMin, double ScaleCMax, const HTuple& ScaleCStep, const HTuple& Optimization, const HString& Metric, const HTuple& Contrast, const HTuple& MinContrast, const HTuple& ParamName, const HTuple& ParamValue)
void HDeformableModel::CreatePlanarUncalibDeformableModel(const HImage& Template, Hlong NumLevels, double AngleStart, double AngleExtent, double AngleStep, double ScaleRMin, double ScaleRMax, double ScaleRStep, double ScaleCMin, double ScaleCMax, double ScaleCStep, const HString& Optimization, const HString& Metric, const HTuple& Contrast, Hlong MinContrast, const HTuple& ParamName, const HTuple& ParamValue)
void HDeformableModel::CreatePlanarUncalibDeformableModel(const HImage& Template, Hlong NumLevels, double AngleStart, double AngleExtent, double AngleStep, double ScaleRMin, double ScaleRMax, double ScaleRStep, double ScaleCMin, double ScaleCMax, double ScaleCStep, const char* Optimization, const char* Metric, const HTuple& Contrast, Hlong MinContrast, const HTuple& ParamName, const HTuple& ParamValue)
HDeformableModel HImage::CreatePlanarUncalibDeformableModel(const HTuple& NumLevels, double AngleStart, double AngleExtent, const HTuple& AngleStep, double ScaleRMin, double ScaleRMax, const HTuple& ScaleRStep, double ScaleCMin, double ScaleCMax, const HTuple& ScaleCStep, const HTuple& Optimization, const HString& Metric, const HTuple& Contrast, const HTuple& MinContrast, const HTuple& ParamName, const HTuple& ParamValue) const
HDeformableModel HImage::CreatePlanarUncalibDeformableModel(Hlong NumLevels, double AngleStart, double AngleExtent, double AngleStep, double ScaleRMin, double ScaleRMax, double ScaleRStep, double ScaleCMin, double ScaleCMax, double ScaleCStep, const HString& Optimization, const HString& Metric, const HTuple& Contrast, Hlong MinContrast, const HTuple& ParamName, const HTuple& ParamValue) const
HDeformableModel HImage::CreatePlanarUncalibDeformableModel(Hlong NumLevels, double AngleStart, double AngleExtent, double AngleStep, double ScaleRMin, double ScaleRMax, double ScaleRStep, double ScaleCMin, double ScaleCMax, double ScaleCStep, const char* Optimization, const char* Metric, const HTuple& Contrast, Hlong MinContrast, const HTuple& ParamName, const HTuple& ParamValue) const
void HOperatorSetX.CreatePlanarUncalibDeformableModel(
[in] IHUntypedObjectX* Template, [in] VARIANT NumLevels, [in] VARIANT AngleStart, [in] VARIANT AngleExtent, [in] VARIANT AngleStep, [in] VARIANT ScaleRMin, [in] VARIANT ScaleRMax, [in] VARIANT ScaleRStep, [in] VARIANT ScaleCMin, [in] VARIANT ScaleCMax, [in] VARIANT ScaleCStep, [in] VARIANT Optimization, [in] VARIANT Metric, [in] VARIANT Contrast, [in] VARIANT MinContrast, [in] VARIANT ParamName, [in] VARIANT ParamValue, [out] VARIANT* ModelID)
void HDeformableModelX.CreatePlanarUncalibDeformableModel(
[in] IHImageX* Template, [in] VARIANT NumLevels, [in] double AngleStart, [in] double AngleExtent, [in] VARIANT AngleStep, [in] double ScaleRMin, [in] double ScaleRMax, [in] VARIANT ScaleRStep, [in] double ScaleCMin, [in] double ScaleCMax, [in] VARIANT ScaleCStep, [in] VARIANT Optimization, [in] BSTR Metric, [in] VARIANT Contrast, [in] VARIANT MinContrast, [in] VARIANT ParamName, [in] VARIANT ParamValue)
IHDeformableModelX* HImageX.CreatePlanarUncalibDeformableModel(
[in] VARIANT NumLevels, [in] double AngleStart, [in] double AngleExtent, [in] VARIANT AngleStep, [in] double ScaleRMin, [in] double ScaleRMax, [in] VARIANT ScaleRStep, [in] double ScaleCMin, [in] double ScaleCMax, [in] VARIANT ScaleCStep, [in] VARIANT Optimization, [in] BSTR Metric, [in] VARIANT Contrast, [in] VARIANT MinContrast, [in] VARIANT ParamName, [in] VARIANT ParamValue)
static void HOperatorSet.CreatePlanarUncalibDeformableModel(HObject template, HTuple numLevels, HTuple angleStart, HTuple angleExtent, HTuple angleStep, HTuple scaleRMin, HTuple scaleRMax, HTuple scaleRStep, HTuple scaleCMin, HTuple scaleCMax, HTuple scaleCStep, HTuple optimization, HTuple metric, HTuple contrast, HTuple minContrast, HTuple paramName, HTuple paramValue, out HTuple modelID)
public HDeformableModel(HImage template, HTuple numLevels, double angleStart, double angleExtent, HTuple angleStep, double scaleRMin, double scaleRMax, HTuple scaleRStep, double scaleCMin, double scaleCMax, HTuple scaleCStep, HTuple optimization, string metric, HTuple contrast, HTuple minContrast, HTuple paramName, HTuple paramValue)
public HDeformableModel(HImage template, int numLevels, double angleStart, double angleExtent, double angleStep, double scaleRMin, double scaleRMax, double scaleRStep, double scaleCMin, double scaleCMax, double scaleCStep, string optimization, string metric, HTuple contrast, int minContrast, HTuple paramName, HTuple paramValue)
void HDeformableModel.CreatePlanarUncalibDeformableModel(HImage template, HTuple numLevels, double angleStart, double angleExtent, HTuple angleStep, double scaleRMin, double scaleRMax, HTuple scaleRStep, double scaleCMin, double scaleCMax, HTuple scaleCStep, HTuple optimization, string metric, HTuple contrast, HTuple minContrast, HTuple paramName, HTuple paramValue)
void HDeformableModel.CreatePlanarUncalibDeformableModel(HImage template, int numLevels, double angleStart, double angleExtent, double angleStep, double scaleRMin, double scaleRMax, double scaleRStep, double scaleCMin, double scaleCMax, double scaleCStep, string optimization, string metric, HTuple contrast, int minContrast, HTuple paramName, HTuple paramValue)
HDeformableModel HImage.CreatePlanarUncalibDeformableModel(HTuple numLevels, double angleStart, double angleExtent, HTuple angleStep, double scaleRMin, double scaleRMax, HTuple scaleRStep, double scaleCMin, double scaleCMax, HTuple scaleCStep, HTuple optimization, string metric, HTuple contrast, HTuple minContrast, HTuple paramName, HTuple paramValue)
HDeformableModel HImage.CreatePlanarUncalibDeformableModel(int numLevels, double angleStart, double angleExtent, double angleStep, double scaleRMin, double scaleRMax, double scaleRStep, double scaleCMin, double scaleCMax, double scaleCStep, string optimization, string metric, HTuple contrast, int minContrast, HTuple paramName, HTuple paramValue)
The operator create_planar_uncalib_deformable_modelcreate_planar_uncalib_deformable_modelCreatePlanarUncalibDeformableModelcreate_planar_uncalib_deformable_modelCreatePlanarUncalibDeformableModelCreatePlanarUncalibDeformableModel prepares a
template, which is passed in the image TemplateTemplateTemplateTemplateTemplatetemplate, as a deformable
model used for uncalibrated perspective matching. The ROI of the model is
passed as the domain of TemplateTemplateTemplateTemplateTemplatetemplate.
The planar uncalibrated matching can be used to detect planar objects
or planar subparts of non-planar objects that are distorted by a projective
view.
This is an alternative to create_shape_modelcreate_shape_modelCreateShapeModelcreate_shape_modelCreateShapeModelCreateShapeModel,
create_scaled_shape_modelcreate_scaled_shape_modelCreateScaledShapeModelcreate_scaled_shape_modelCreateScaledShapeModelCreateScaledShapeModel and create_aniso_shape_modelcreate_aniso_shape_modelCreateAnisoShapeModelcreate_aniso_shape_modelCreateAnisoShapeModelCreateAnisoShapeModel,
where typically the search image must be rectified by
calibrate_camerascalibrate_camerasCalibrateCamerascalibrate_camerasCalibrateCamerasCalibrateCameras and gen_image_to_world_plane_mapgen_image_to_world_plane_mapGenImageToWorldPlaneMapgen_image_to_world_plane_mapGenImageToWorldPlaneMapGenImageToWorldPlaneMap
beforehand.
In contrast to create_shape_model_3dcreate_shape_model_3dCreateShapeModel3dcreate_shape_model_3dCreateShapeModel3dCreateShapeModel3d there is no need to
pre-generate different views of an object, resulting into a smaller memory
consumption. Hence, in case of a planar perspectively distorted object,
create_planar_uncalib_deformable_modelcreate_planar_uncalib_deformable_modelCreatePlanarUncalibDeformableModelcreate_planar_uncalib_deformable_modelCreatePlanarUncalibDeformableModelCreatePlanarUncalibDeformableModel should be prefered.
The model is generated using multiple image pyramid levels and is
stored in memory. The output parameter
ModelIDModelIDModelIDModelIDModelIDmodelID is a handle for this model, which is used in
subsequent calls to find_planar_uncalib_deformable_modelfind_planar_uncalib_deformable_modelFindPlanarUncalibDeformableModelfind_planar_uncalib_deformable_modelFindPlanarUncalibDeformableModelFindPlanarUncalibDeformableModel.
The number of pyramid levels is determined with the parameter
NumLevelsNumLevelsNumLevelsNumLevelsNumLevelsnumLevels. It should be chosen as large as possible
because by this the time necessary to find the object is
significantly reduced. On the other hand, NumLevelsNumLevelsNumLevelsNumLevelsNumLevelsnumLevels must
be chosen such that the model is still recognizable and contains a
sufficient number of points on the highest pyramid level. If not enough
model points are generated, the number of pyramid levels is reduced
internally until enough model points are found on the highest pyramid level.
If this procedure would lead to a model with no pyramid levels, i.e., if the
number of model points is already too small on the lowest pyramid level,
create_planar_uncalib_deformable_modelcreate_planar_uncalib_deformable_modelCreatePlanarUncalibDeformableModelcreate_planar_uncalib_deformable_modelCreatePlanarUncalibDeformableModelCreatePlanarUncalibDeformableModel returns with an error message.
If NumLevelsNumLevelsNumLevelsNumLevelsNumLevelsnumLevels is set to 'auto'"auto""auto""auto""auto""auto",
create_planar_uncalib_deformable_modelcreate_planar_uncalib_deformable_modelCreatePlanarUncalibDeformableModelcreate_planar_uncalib_deformable_modelCreatePlanarUncalibDeformableModelCreatePlanarUncalibDeformableModel determines the number of
pyramid levels automatically. The automatically computed number of pyramid
levels can be queried using get_deformable_model_paramsget_deformable_model_paramsGetDeformableModelParamsget_deformable_model_paramsGetDeformableModelParamsGetDeformableModelParams. In rare
cases, it might happen that create_planar_uncalib_deformable_modelcreate_planar_uncalib_deformable_modelCreatePlanarUncalibDeformableModelcreate_planar_uncalib_deformable_modelCreatePlanarUncalibDeformableModelCreatePlanarUncalibDeformableModel
determines a value for the number of pyramid levels that is too
large or too small. If the number of pyramid levels is chosen too
large, the model may not be recognized in the image or it may be
necessary to select very low parameters for MinScore or Greediness
in find_planar_uncalib_deformable_modelfind_planar_uncalib_deformable_modelFindPlanarUncalibDeformableModelfind_planar_uncalib_deformable_modelFindPlanarUncalibDeformableModelFindPlanarUncalibDeformableModel in order to find the model.
If the number of pyramid levels is chosen too small, the time required
to find the model in find_planar_uncalib_deformable_modelfind_planar_uncalib_deformable_modelFindPlanarUncalibDeformableModelfind_planar_uncalib_deformable_modelFindPlanarUncalibDeformableModelFindPlanarUncalibDeformableModel increases.
In these cases, the number of pyramid levels should be selected using the
output of inspect_shape_modelinspect_shape_modelInspectShapeModelinspect_shape_modelInspectShapeModelInspectShapeModel.
The range parameters AngleStartAngleStartAngleStartAngleStartAngleStartangleStart, AngleExtentAngleExtentAngleExtentAngleExtentAngleExtentangleExtent,
ScaleRMinScaleRMinScaleRMinScaleRMinScaleRMinscaleRMin, ScaleRMaxScaleRMaxScaleRMaxScaleRMaxScaleRMaxscaleRMax, ScaleCMinScaleCMinScaleCMinScaleCMinScaleCMinscaleCMin and
ScaleCMaxScaleCMaxScaleCMaxScaleCMaxScaleCMaxscaleCMax are used to specify a basic range of up to an anisotropic
transformation that is exhaustively searched on the top level of the image
pyramid. Note that the operator find_planar_uncalib_deformable_modelfind_planar_uncalib_deformable_modelFindPlanarUncalibDeformableModelfind_planar_uncalib_deformable_modelFindPlanarUncalibDeformableModelFindPlanarUncalibDeformableModel
finds objects outside this range, e.g., even when the object is perspectively
distorted. Hence, the range parameters are a kind of suggestion for the
search algorithm find_planar_uncalib_deformable_modelfind_planar_uncalib_deformable_modelFindPlanarUncalibDeformableModelfind_planar_uncalib_deformable_modelFindPlanarUncalibDeformableModelFindPlanarUncalibDeformableModel, and starting
from there a certain bigger range can be detected that depends on the
pyramid levels that are used and on the model/image content.
It is important to note that, e.g., small scale changes can be tolerated
without the need to specify a scale range, leading to faster execution
times.
The parameters AngleStartAngleStartAngleStartAngleStartAngleStartangleStart and AngleExtentAngleExtentAngleExtentAngleExtentAngleExtentangleExtent
determine the range of possible rotations, in which the model is exhaustively
searched in the image. The parameter
AngleStepAngleStepAngleStepAngleStepAngleStepangleStep determines the step length within the selected
range of angles. AngleStepAngleStepAngleStepAngleStepAngleStepangleStep should be chosen based on the size of
the object. Smaller models do not have many different discrete rotations
in the image, and hence AngleStepAngleStepAngleStepAngleStepAngleStepangleStep should be chosen larger for
smaller models. If AngleExtentAngleExtentAngleExtentAngleExtentAngleExtentangleExtent is not an integer multiple of
AngleStepAngleStepAngleStepAngleStepAngleStepangleStep, AngleStepAngleStepAngleStepAngleStepAngleStepangleStep is modified accordingly.
The parameters ScaleRMinScaleRMinScaleRMinScaleRMinScaleRMinscaleRMin, ScaleRMaxScaleRMaxScaleRMaxScaleRMaxScaleRMaxscaleRMax,
ScaleCMinScaleCMinScaleCMinScaleCMinScaleCMinscaleCMin, and ScaleCMaxScaleCMaxScaleCMaxScaleCMaxScaleCMaxscaleCMax determine the range of
possible anisotropic scales that are exhaustively searched in the image.
A scale of 1 in both scale factors corresponds to the
original size of the model. The parameters ScaleRStepScaleRStepScaleRStepScaleRStepScaleRStepscaleRStep and
ScaleCStepScaleCStepScaleCStepScaleCStepScaleCStepscaleCStep determine the step length within the selected
range of scales. Like AngleStepAngleStepAngleStepAngleStepAngleStepangleStep, ScaleRStepScaleRStepScaleRStepScaleRStepScaleRStepscaleRStep and
ScaleCStepScaleCStepScaleCStepScaleCStepScaleCStepscaleCStep should be chosen based on the size of the object.
If the respective range of scales is not an integer multiple of
ScaleRStepScaleRStepScaleRStepScaleRStepScaleRStepscaleRStep and ScaleCStepScaleCStepScaleCStepScaleCStepScaleCStepscaleCStep, ScaleRStepScaleRStepScaleRStepScaleRStepScaleRStepscaleRStep and
ScaleCStepScaleCStepScaleCStepScaleCStepScaleCStepscaleCStep are modified accordingly.
If the object is expected to have significant scale changes, but only small
perspective distortions, isotropic scaling is required and ScaleCMinScaleCMinScaleCMinScaleCMinScaleCMinscaleCMin
and ScaleCMaxScaleCMaxScaleCMaxScaleCMaxScaleCMaxscaleCMax should be both set to the value 1.0 to signal that no
anisotropic scaling is needed. If the object should be detected despite
severe perspective distortions anisotropic scaling is required. Here,
ScaleRMinScaleRMinScaleRMinScaleRMinScaleRMinscaleRMin and ScaleRMaxScaleRMaxScaleRMaxScaleRMaxScaleRMaxscaleRMax specify the anisotropic scaling in
row, ScaleCMinScaleCMinScaleCMinScaleCMinScaleCMinscaleCMin and ScaleCMaxScaleCMaxScaleCMaxScaleCMaxScaleCMaxscaleCMax in column direction.
Note that the transformations are treated internally such that the
scalings are applied first, followed by the rotation. Therefore,
the model should usually be aligned such that it appears
horizontally or vertically in the model image.
For particularly large models, it may be useful to reduce the number
of model points by setting OptimizationOptimizationOptimizationOptimizationOptimizationoptimization to a value
different from 'none'"none""none""none""none""none". If OptimizationOptimizationOptimizationOptimizationOptimizationoptimization =
'none'"none""none""none""none""none", all model points are stored. In all other cases,
the number of points is reduced according to the value of
OptimizationOptimizationOptimizationOptimizationOptimizationoptimization. If the number of points is reduced, it may
be necessary in find_planar_uncalib_deformable_modelfind_planar_uncalib_deformable_modelFindPlanarUncalibDeformableModelfind_planar_uncalib_deformable_modelFindPlanarUncalibDeformableModelFindPlanarUncalibDeformableModel to set the
parameter Score and Greediness to a smaller value. For
small models, the reduction of the number of model points does not result
in a speed-up of the search because in this case usually
significantly more potential instances of the model must be
examined. If OptimizationOptimizationOptimizationOptimizationOptimizationoptimization is set to 'auto'"auto""auto""auto""auto""auto",
create_planar_uncalib_deformable_modelcreate_planar_uncalib_deformable_modelCreatePlanarUncalibDeformableModelcreate_planar_uncalib_deformable_modelCreatePlanarUncalibDeformableModelCreatePlanarUncalibDeformableModel automatically determines the
reduction of the number of model points.
The parameter ContrastContrastContrastContrastContrastcontrast determines the contrast the model
points (edges) must have. The contrast is a measure for local gray value
differences between the object and the background and between
different parts of the object. ContrastContrastContrastContrastContrastcontrast should be chosen
such that only the significant features of the template are used for
the model. ContrastContrastContrastContrastContrastcontrast can also contain a tuple with two
values. In this case, the model is segmented using a method similar
to the hysteresis threshold method used in edges_imageedges_imageEdgesImageedges_imageEdgesImageEdgesImage.
Here, the first element of the tuple determines the lower threshold,
while the second element determines the upper threshold. For more
information about the hysteresis threshold method, see
hysteresis_thresholdhysteresis_thresholdHysteresisThresholdhysteresis_thresholdHysteresisThresholdHysteresisThreshold. If ContrastContrastContrastContrastContrastcontrast is set to
'auto'"auto""auto""auto""auto""auto", create_planar_uncalib_deformable_modelcreate_planar_uncalib_deformable_modelCreatePlanarUncalibDeformableModelcreate_planar_uncalib_deformable_modelCreatePlanarUncalibDeformableModelCreatePlanarUncalibDeformableModel determines
the two above described values automatically. Alternatively, only the
contrast ('auto_contrast'"auto_contrast""auto_contrast""auto_contrast""auto_contrast""auto_contrast") or the hysteresis thresholds
('auto_contrast_hyst'"auto_contrast_hyst""auto_contrast_hyst""auto_contrast_hyst""auto_contrast_hyst""auto_contrast_hyst") can be determined automatically. The
remaining values that are not determined automatically can
additionally be passed in the form of a tuple.
In certain cases, it might happen that the automatic determination of the
contrast thresholds is not satisfying. For example, a manual setting of these
parameters should be preferred if certain model components should be included
or suppressed because of application-specific reasons or if the object
contains several different contrasts. Therefore, the contrast
thresholds should be automatically determined with
determine_deformable_model_paramsdetermine_deformable_model_paramsDetermineDeformableModelParamsdetermine_deformable_model_paramsDetermineDeformableModelParamsDetermineDeformableModelParams and subsequently verified using
inspect_shape_modelinspect_shape_modelInspectShapeModelinspect_shape_modelInspectShapeModelInspectShapeModel before calling
create_planar_uncalib_deformable_modelcreate_planar_uncalib_deformable_modelCreatePlanarUncalibDeformableModelcreate_planar_uncalib_deformable_modelCreatePlanarUncalibDeformableModelCreatePlanarUncalibDeformableModel.
With MinContrastMinContrastMinContrastMinContrastMinContrastminContrast, it can be determined which minimal contrast the
model must have in the recognition performed by
find_planar_uncalib_deformable_modelfind_planar_uncalib_deformable_modelFindPlanarUncalibDeformableModelfind_planar_uncalib_deformable_modelFindPlanarUncalibDeformableModelFindPlanarUncalibDeformableModel. In other words, this parameter
separates the model from the noise in the image. Therefore, a good
choice is the range of gray value changes caused by the noise in the
image. If, for example, the gray values fluctuate within a range of
10 gray levels, MinContrastMinContrastMinContrastMinContrastMinContrastminContrast should be set to 10.
Obviously, MinContrastMinContrastMinContrastMinContrastMinContrastminContrast must be smaller than ContrastContrastContrastContrastContrastcontrast. If
the model should be recognized in very low contrast images,
MinContrastMinContrastMinContrastMinContrastMinContrastminContrast must be set to a correspondingly small value. If the
model should be recognized even if it is severely occluded,
MinContrastMinContrastMinContrastMinContrastMinContrastminContrast should be slightly larger than the range of gray value
fluctuations created by noise in order to ensure that the position and
rotation of the model are extracted robustly and accurately by
find_planar_uncalib_deformable_modelfind_planar_uncalib_deformable_modelFindPlanarUncalibDeformableModelfind_planar_uncalib_deformable_modelFindPlanarUncalibDeformableModelFindPlanarUncalibDeformableModel. If MinContrastMinContrastMinContrastMinContrastMinContrastminContrast is set
to 'auto'"auto""auto""auto""auto""auto", the minimum contrast is determined automatically
based on the noise in the model image. Consequently, an automatic
determination only makes sense if the image noise during the recognition is
similar to the noise in the model image. Furthermore, in some cases it is
advisable to increase the automatically determined value in order to
increase the robustness against occlusions (see above). The automatically
computed minimum contrast can be queried using
get_deformable_model_paramsget_deformable_model_paramsGetDeformableModelParamsget_deformable_model_paramsGetDeformableModelParamsGetDeformableModelParams. The MinContrastMinContrastMinContrastMinContrastMinContrastminContrast of a deformable
model can later be changed with the help of
set_deformable_model_paramset_deformable_model_paramSetDeformableModelParamset_deformable_model_paramSetDeformableModelParamSetDeformableModelParam.
The parameter MetricMetricMetricMetricMetricmetric determines the conditions under which
the model is recognized in the image. If MetricMetricMetricMetricMetricmetric =
'use_polarity'"use_polarity""use_polarity""use_polarity""use_polarity""use_polarity", the object in the image and the model must
have the same contrast. If, for example, the model is a bright
object on a dark background, the object is found only if it is also
brighter than the background. If MetricMetricMetricMetricMetricmetric =
'ignore_global_polarity'"ignore_global_polarity""ignore_global_polarity""ignore_global_polarity""ignore_global_polarity""ignore_global_polarity", the object is found in the image
also if the contrast reverses globally. In the above example, the
object hence is also found if it is darker than the background. The runtime
of find_planar_uncalib_deformable_modelfind_planar_uncalib_deformable_modelFindPlanarUncalibDeformableModelfind_planar_uncalib_deformable_modelFindPlanarUncalibDeformableModelFindPlanarUncalibDeformableModel will increase slightly in
this case. If MetricMetricMetricMetricMetricmetric = 'ignore_part_polarity'"ignore_part_polarity""ignore_part_polarity""ignore_part_polarity""ignore_part_polarity""ignore_part_polarity", the
the contrast polarity is allowed to change only between different
parts of the model, whereas the polarity of model points that are
within the same model part must not change. Please note that the
term 'ignore_part_polarity'"ignore_part_polarity""ignore_part_polarity""ignore_part_polarity""ignore_part_polarity""ignore_part_polarity" is capable of being
misunderstood. It means that polarity changes between
neighboring model parts do not influence the score, and hence
are ignored. If MetricMetricMetricMetricMetricmetric = 'ignore_local_polarity'"ignore_local_polarity""ignore_local_polarity""ignore_local_polarity""ignore_local_polarity""ignore_local_polarity",
the model is found even if the contrast changes for each individual model
point. This mode can, for example, be useful if the object consists of a part
with medium gray value, within which either darker or brighter
sub-objects lie. In this case the runtime of
find_planar_uncalib_deformable_modelfind_planar_uncalib_deformable_modelFindPlanarUncalibDeformableModelfind_planar_uncalib_deformable_modelFindPlanarUncalibDeformableModelFindPlanarUncalibDeformableModel increases significantly. The
above four metrics can only be applied to single-channel images. If a
multichannel image is used as the model image or as the search image only the
first channel will be used (and no error message will be returned). If
MetricMetricMetricMetricMetricmetric = 'ignore_color_polarity'"ignore_color_polarity""ignore_color_polarity""ignore_color_polarity""ignore_color_polarity""ignore_color_polarity", the model is
found even if the color contrast changes locally. This is, for
example, the case if parts of the object can change their color,
e.g., from red to green. In particular, this mode is useful if it
is not known in advance in which channels the object is visible. In
this mode, the runtime of find_planar_uncalib_deformable_modelfind_planar_uncalib_deformable_modelFindPlanarUncalibDeformableModelfind_planar_uncalib_deformable_modelFindPlanarUncalibDeformableModelFindPlanarUncalibDeformableModel can
also increase significantly. The metric 'ignore_color_polarity'"ignore_color_polarity""ignore_color_polarity""ignore_color_polarity""ignore_color_polarity""ignore_color_polarity" can
be used for images with an arbitrary number of channels. If it is used
for single-channel images it has the same effect as
'ignore_local_polarity'"ignore_local_polarity""ignore_local_polarity""ignore_local_polarity""ignore_local_polarity""ignore_local_polarity". It should be noted that for
MetricMetricMetricMetricMetricmetric = 'ignore_color_polarity'"ignore_color_polarity""ignore_color_polarity""ignore_color_polarity""ignore_color_polarity""ignore_color_polarity" the number of
channels in the model creation with
create_planar_uncalib_deformable_modelcreate_planar_uncalib_deformable_modelCreatePlanarUncalibDeformableModelcreate_planar_uncalib_deformable_modelCreatePlanarUncalibDeformableModelCreatePlanarUncalibDeformableModel and in the search with
find_planar_uncalib_deformable_modelfind_planar_uncalib_deformable_modelFindPlanarUncalibDeformableModelfind_planar_uncalib_deformable_modelFindPlanarUncalibDeformableModelFindPlanarUncalibDeformableModel can be different. This
can, for example, be used to create a model from a synthetically
generated single-channel image. Furthermore, it should be noted
that the channels do not need to contain a spectral subdivision of
the light (like in an RGB image). The channels can, for example,
also contain images of the same object that were obtained by
illuminating the object from different directions.
With the help of the generic parameters ParamNameParamNameParamNameParamNameParamNameparamName and
ParamValueParamValueParamValueParamValueParamValueparamValue, the user can set parameters for the deformable model
generation that are needed only in rare cases.
Currently, it is used to adapt the average size of the sub-parts that the
deformable model should consist of. Here, ParamNameParamNameParamNameParamNameParamNameparamName should be set
to 'part_size' and ParamValueParamValueParamValueParamValueParamValueparamValue should be set to 'small',
'medium' or 'big'. For objects that consist of many small contours, 'small'
should be selected. For objects that consist of only big contours,
'big' should be set. Optionally, ParamNameParamNameParamNameParamNameParamNameparamName = 'min_size'"min_size""min_size""min_size""min_size""min_size"
can determine a threshold for the selection of significant model
components based on the size of the components, i.e., components
that have fewer points than the minimum size specified in the
corresponding ParamValueParamValueParamValueParamValueParamValueparamValue are suppressed. This threshold for the
minimum size is divided by two for each successive pyramid level. The center
of gravity of the domain (region) of the model image TemplateTemplateTemplateTemplateTemplatetemplate is
used as the origin (reference point) of the model. A different origin for the
model can be set with set_deformable_model_originset_deformable_model_originSetDeformableModelOriginset_deformable_model_originSetDeformableModelOriginSetDeformableModelOrigin.
- Multithreading type: exclusive (runs in parallel only with independent operators).
- Multithreading scope: global (may be called from any thread).
- Processed without parallelization.
Input image whose domain will be used to create
the model.
Maximum number of pyramid levels.
Default value:
'auto'
"auto"
"auto"
"auto"
"auto"
"auto"
List of values: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 'auto'"auto""auto""auto""auto""auto"
Smallest rotation of the pattern.
Default value: -0.39
Suggested values: -3.14, -1.57, -0.79, -0.39, -0.20, 0.0
Extent of the rotation angles.
Default value: 0.79
Suggested values: 6.29, 3.14, 1.57, 0.79, 0.39
Restriction: AngleExtent >= 0
Step length of the angles (resolution).
Default value:
'auto'
"auto"
"auto"
"auto"
"auto"
"auto"
Suggested values: 'auto'"auto""auto""auto""auto""auto", 0.0175, 0.0349, 0.0524, 0.0698, 0.0873
Restriction: AngleStep >= 0
Minimum scale of the pattern in row direction.
Default value: 1.0
Suggested values: 0.5, 0.6, 0.7, 0.8, 0.9, 1.0
Restriction: ScaleRMin > 0
Maximum scale of the pattern in row direction.
Default value: 1.0
Suggested values: 1.0, 1.1, 1.2, 1.3, 1.4, 1.5
Restriction: ScaleRMax >= ScaleRMin
Scale step length (resolution) in row direction.
Default value:
'auto'
"auto"
"auto"
"auto"
"auto"
"auto"
Suggested values: 'auto'"auto""auto""auto""auto""auto", 0.01, 0.02, 0.05, 0.1, 0.15, 0.2
Restriction: ScaleRStep >= 0
Minimum scale of the pattern in column direction.
Default value: 1.0
Suggested values: 0.5, 0.6, 0.7, 0.8, 0.9, 1.0
Restriction: ScaleCMin > 0
Maximum scale of the pattern in column direction.
Default value: 1.0
Suggested values: 1.0, 1.1, 1.2, 1.3, 1.4, 1.5
Restriction: ScaleCMax >= ScaleCMin
Scale step length (resolution) in column direction.
Default value:
'auto'
"auto"
"auto"
"auto"
"auto"
"auto"
Suggested values: 'auto'"auto""auto""auto""auto""auto", 0.01, 0.02, 0.05, 0.1, 0.15, 0.2
Restriction: ScaleCStep >= 0
Kind of optimization used for generating the model.
Default value:
'none'
"none"
"none"
"none"
"none"
"none"
List of values: 'auto'"auto""auto""auto""auto""auto", 'none'"none""none""none""none""none", 'point_reduction_high'"point_reduction_high""point_reduction_high""point_reduction_high""point_reduction_high""point_reduction_high", 'point_reduction_low'"point_reduction_low""point_reduction_low""point_reduction_low""point_reduction_low""point_reduction_low", 'point_reduction_medium'"point_reduction_medium""point_reduction_medium""point_reduction_medium""point_reduction_medium""point_reduction_medium"
Match metric.
Default value:
'use_polarity'
"use_polarity"
"use_polarity"
"use_polarity"
"use_polarity"
"use_polarity"
List of values: 'ignore_color_polarity'"ignore_color_polarity""ignore_color_polarity""ignore_color_polarity""ignore_color_polarity""ignore_color_polarity", 'ignore_global_polarity'"ignore_global_polarity""ignore_global_polarity""ignore_global_polarity""ignore_global_polarity""ignore_global_polarity", 'ignore_local_polarity'"ignore_local_polarity""ignore_local_polarity""ignore_local_polarity""ignore_local_polarity""ignore_local_polarity", 'ignore_part_polarity'"ignore_part_polarity""ignore_part_polarity""ignore_part_polarity""ignore_part_polarity""ignore_part_polarity", 'use_polarity'"use_polarity""use_polarity""use_polarity""use_polarity""use_polarity"
Thresholds or hysteresis thresholds for the contrast
of the object in the template image.
Default value:
'auto'
"auto"
"auto"
"auto"
"auto"
"auto"
Suggested values: 'auto'"auto""auto""auto""auto""auto", 10, 20, 30, 40, 60, 80, 100, 120, 140, 160
Minimum contrast of the objects in the search images.
Default value:
'auto'
"auto"
"auto"
"auto"
"auto"
"auto"
Suggested values: 'auto'"auto""auto""auto""auto""auto", 1, 2, 3, 5, 7, 10, 20, 30, 40
Restriction: MinContrast < Contrast
The generic parameter names.
Default value: []
List of values: [], 'min_size'"min_size""min_size""min_size""min_size""min_size", 'part_size'"part_size""part_size""part_size""part_size""part_size"
Values of the generic parameter.
Default value: []
List of values: [], 'big'"big""big""big""big""big", 'medium'"medium""medium""medium""medium""medium", 'small'"small""small""small""small""small"
If the parameters are valid, the operator
create_planar_uncalib_deformable_modelcreate_planar_uncalib_deformable_modelCreatePlanarUncalibDeformableModelcreate_planar_uncalib_deformable_modelCreatePlanarUncalibDeformableModelCreatePlanarUncalibDeformableModel returns the value 2 (H_MSG_TRUE). If
necessary an exception is raised.
determine_deformable_model_paramsdetermine_deformable_model_paramsDetermineDeformableModelParamsdetermine_deformable_model_paramsDetermineDeformableModelParamsDetermineDeformableModelParams
set_deformable_model_originset_deformable_model_originSetDeformableModelOriginset_deformable_model_originSetDeformableModelOriginSetDeformableModelOrigin,
set_deformable_model_paramset_deformable_model_paramSetDeformableModelParamset_deformable_model_paramSetDeformableModelParamSetDeformableModelParam,
get_deformable_model_contoursget_deformable_model_contoursGetDeformableModelContoursget_deformable_model_contoursGetDeformableModelContoursGetDeformableModelContours,
find_planar_uncalib_deformable_modelfind_planar_uncalib_deformable_modelFindPlanarUncalibDeformableModelfind_planar_uncalib_deformable_modelFindPlanarUncalibDeformableModelFindPlanarUncalibDeformableModel,
get_deformable_model_paramsget_deformable_model_paramsGetDeformableModelParamsget_deformable_model_paramsGetDeformableModelParamsGetDeformableModelParams,
write_deformable_modelwrite_deformable_modelWriteDeformableModelwrite_deformable_modelWriteDeformableModelWriteDeformableModel,
clear_deformable_modelclear_deformable_modelClearDeformableModelclear_deformable_modelClearDeformableModelClearDeformableModel
read_deformable_modelread_deformable_modelReadDeformableModelread_deformable_modelReadDeformableModelReadDeformableModel
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