paint_region — Paint regions into an image.
paint_region paints the regions given in Region with a constant gray value into the image given in Image and returns the result in ImageResult. These gray values can either be specified for each channel once, valid for all regions, or for each region separately. To define the latter, group the channel gray values g of each region and concatenate them to a tuple according to the regions' order, e.g., for a three channel image:
[g(channel1,region1), g(channel2,region1), g(channel3,region1), g(channel1,region2), ... ].
If the input image is of type 'direction', gray values that are not in the value range that is valid for 'direction' images are set to the value 255 to mark them as invalid. The parameter Type determines whether the region should be painted filled ('fill') or whether only its boundary should be painted ('margin').
As an alternative to paint_region, you can use the operator overpaint_region, which directly paints the regions into Image.
Regions to be painted into the input image.
Image in which the regions are to be painted.
Image containing the result.
Desired gray values of the regions.
Default value: 255.0
Suggested values: 0.0, 1.0, 2.0, 5.0, 10.0, 16.0, 32.0, 64.0, 128.0, 253.0, 254.0, 255.0
Paint regions filled or as boundaries.
Default value: 'fill'
List of values: 'fill', 'margin'
* Paint a rectangle into the image 'monkey' read_image(Image,'monkey') gen_rectangle1(Rectangle,100.0,100.0,300.0,300.0) * paint a white rectangle paint_region(Rectangle,Image,ImageResult,255.0,'fill')
paint_region returns 2 (H_MSG_TRUE) if all parameters are correct. If the input is empty the behavior can be set via set_system(::'no_object_result',<Result>:). If necessary, an exception is raised.
read_image, gen_image_const, gen_image_proto, reduce_domain
set_grayval, overpaint_region, paint_xld
reduce_domain, paint_gray, overpaint_gray, set_draw, gen_image_const