Name
fast_match_mgfast_match_mgFastMatchMgfast_match_mgFastMatchMgFastMatchMg — Searching all good grayvalue matches in a pyramid.
Herror fast_match_mg(Hobject Image, Hobject* Matches, const HTuple& TemplateID, const HTuple& MaxError, const HTuple& NumLevel)
HRegion HImage::FastMatchMg(const HTemplate& TemplateID, const HTuple& MaxError, const HTuple& NumLevel) const
HRegionArray HImageArray::FastMatchMg(const HTemplate& TemplateID, const HTuple& MaxError, const HTuple& NumLevel) const
HRegionArray HTemplate::FastMatchMg(const HImageArray& Image, const HTuple& MaxError, const HTuple& NumLevel) const
void FastMatchMg(const HObject& Image, HObject* Matches, const HTuple& TemplateID, const HTuple& MaxError, const HTuple& NumLevel)
HRegion HTemplate::FastMatchMg(const HImage& Image, double MaxError, const HTuple& NumLevel) const
HRegion HTemplate::FastMatchMg(const HImage& Image, double MaxError, Hlong NumLevel) const
HRegion HImage::FastMatchMg(const HTemplate& TemplateID, double MaxError, const HTuple& NumLevel) const
HRegion HImage::FastMatchMg(const HTemplate& TemplateID, double MaxError, Hlong NumLevel) const
static void HOperatorSet.FastMatchMg(HObject image, out HObject matches, HTuple templateID, HTuple maxError, HTuple numLevel)
HRegion HTemplate.FastMatchMg(HImage image, double maxError, HTuple numLevel)
HRegion HTemplate.FastMatchMg(HImage image, double maxError, int numLevel)
HRegion HImage.FastMatchMg(HTemplate templateID, double maxError, HTuple numLevel)
HRegion HImage.FastMatchMg(HTemplate templateID, double maxError, int numLevel)
The operator fast_match_mgfast_match_mgFastMatchMgfast_match_mgFastMatchMgFastMatchMg like the operator
fast_matchfast_matchFastMatchfast_matchFastMatchFastMatch performs a matching of the template of
TemplateIDTemplateIDTemplateIDTemplateIDTemplateIDtemplateID and ImageImageImageImageImageimage.
In contrast to fast_matchfast_matchFastMatchfast_matchFastMatchFastMatch, however, the search for
good matches starts in scaled down images (pyramid).
The number of levels of the pyramid will be determined by
NumLevelNumLevelNumLevelNumLevelNumLevelnumLevel.
Hereby the value 1 indicates that no pyramid will be used.
In this case the operator fast_match_mgfast_match_mgFastMatchMgfast_match_mgFastMatchMgFastMatchMg is
equivalent to the operator fast_matchfast_matchFastMatchfast_matchFastMatchFastMatch. The value
2 triggers the search in the image with half the framesize.
The search for all those points showing an error small enough
in the scaled down image (error smaller than MaxErrorMaxErrorMaxErrorMaxErrorMaxErrormaxError)
will be refined at the corresponding positions
in the original image (ImageImageImageImageImageimage).
The runtime of matching dependends on the parameter MaxErrorMaxErrorMaxErrorMaxErrorMaxErrormaxError:
the larger the value the longer is the processing time,
because more points of the pattern have to be tested.
If MaxErrorMaxErrorMaxErrorMaxErrorMaxErrormaxError is to low the pattern will not be found.
The value has therefore to be optimized for every
application.
NumLevelNumLevelNumLevelNumLevelNumLevelnumLevel indicates the number of levels of the pyramid,
including the original image.
Optionally a second value can be given. This value specifies
the number (0..n) of the lowest level which is used the matching.
The region found up to this level will then be zoomed to the size
of the original level.
This can used to increase the runtime in the case that the accuracy
does not have to be so high.
- Multithreading type: reentrant (runs in parallel with non-exclusive operators).
- Multithreading scope: global (may be called from any thread).
- Automatically parallelized on tuple level.
Input image inside of which the pattern has to
be found.
All points which have an error below a certain
threshold.
Maximal average difference of the grayvalues.
Default value: 30.0
Suggested values: 0.0, 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 9.0, 11.0, 15.0, 17.0, 20.0, 30.0, 40.0, 50.0, 60.0, 70.0
Typical range of values: 0
≤
MaxError
MaxError
MaxError
MaxError
MaxError
maxError
≤
255
Minimum increment: 1
Recommended increment: 3
Number of levels in the pyramid.
Default value: 3
List of values: 1, 2, 3, 4, 5, 6, 7, 8
If the parameter values are correct, the operator fast_match_mgfast_match_mgFastMatchMgfast_match_mgFastMatchMgFastMatchMg
returns the value 2 (H_MSG_TRUE).
If the input is empty (no input images are available) the behaviour can
be set via set_system('no_object_result',<Result>)set_system("no_object_result",<Result>)SetSystem("no_object_result",<Result>)set_system("no_object_result",<Result>)SetSystem("no_object_result",<Result>)SetSystem("no_object_result",<Result>).
If necessary, an exception is raised.
create_templatecreate_templateCreateTemplatecreate_templateCreateTemplateCreateTemplate,
read_templateread_templateReadTemplateread_templateReadTemplateReadTemplate,
adapt_templateadapt_templateAdaptTemplateadapt_templateAdaptTemplateAdaptTemplate,
draw_regiondraw_regionDrawRegiondraw_regionDrawRegionDrawRegion,
draw_rectangle1draw_rectangle1DrawRectangle1draw_rectangle1DrawRectangle1DrawRectangle1,
reduce_domainreduce_domainReduceDomainreduce_domainReduceDomainReduceDomain
best_matchbest_matchBestMatchbest_matchBestMatchBestMatch,
best_match_mgbest_match_mgBestMatchMgbest_match_mgBestMatchMgBestMatchMg,
fast_matchfast_matchFastMatchfast_matchFastMatchFastMatch,
exhaustive_matchexhaustive_matchExhaustiveMatchexhaustive_matchExhaustiveMatchExhaustiveMatch,
exhaustive_match_mgexhaustive_match_mgExhaustiveMatchMgexhaustive_match_mgExhaustiveMatchMgExhaustiveMatchMg
Matching