exhaustive_match_mg — 在分辨率金字塔中匹配模板和图像。
exhaustive_match_mg(Image, ImageTemplate : ImageMatch : Mode, Level, Threshold : )
算子 exhaustive_match_mg is an additional option for the
operator exhaustive_match performing a matching of the image
Image and the template ImageTemplate.
Hereby ImageTemplate will be moved over all points
of the region of Image, a matching criterion will be
calculated with regard to the parameter Mode
and the result values will be stored in ImageMatch。
Of images having been filtered this way, normally only those areas
with good matching results are of interest. The size of the area to
be searched, i.e. the region of the input image Image,
determines decisively the runtime of the matching filter.
Therefore it is recommendable to use at first exhaustive_match_mg
with reduced image resolution in order to determine a
“region of interest” in which good matching results can be expected;
then in this restricted area only the real matching (see also
exhaustive_match) will be executed with normal resolution.
Hereby the Gauss-pyramids of Image and ImageTemplate
will be composed (in particular the corresponding regions will be
transformed as well). Then on each level of the resolution pyramids -
starting with the startlevel Level - the matching inside
the current “region of interest” will be executed. Whereby the
“region of interest” on the startlevel is equivalent to the
region of the input image Image.
After the filtering, a new “region of interest” is determined with
the help of a threshold operation and will be transformed on the
next resolution level:
threshold(...:...:0,Threshold,...:), if Mode = 'dfd' threshold(...:...:Threshold,255,...:), if Mode = 'norm_correlation'
The final matching in the determined “region of interest” will then be
calculated with the highest resolution (Level 0).
The output image ImageMatch includes the corresponding
filter result and the final “region of interest”, which
is determined on the result image with the help of a threshold operation.
算子 exhaustive_match_mg therefore is not simply
a filter, but can also be considered as a member of the class of region
transformations.
Image (输入对象) singlechannelimage(-array) → object (byte)
输入图像。
ImageTemplate (输入对象) singlechannelimage → object (byte)
The domain of this image will be
matched with Image。
ImageMatch (输出对象) image(-array) → object (byte)
Result image and result region: values of the matching criterion within the determined “region of interest”.
元素数量： ImageMatch == Image
Mode (输入控制) string → (string)
Desired matching criterion.
默认值： 'dfd'
值列表： 'dfd', 'norm_correlation'
Level (输入控制) integer → (integer)
Startlevel in the resolution pyramid (highest resolution: Level 0).
默认值： 1
建议值： 0, 1, 2, 3, 4, 5, 6, 7, 8
限制：
Level <= ld(width(Image)) && Level <= ld(height(Image)) && Level <= ld(width(ImageTemplate)) && Level <= ld(height(ImageTemplate))
Threshold (输入控制) integer → (integer)
Threshold to determine the “region of interest”.
默认值： 30
建议值： 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95, 100, 105, 110, 115, 120, 125, 130, 135, 140, 145, 150, 155, 160, 165, 170, 175, 180, 185, 190, 195, 200, 205, 210, 215, 220, 225, 230, 235, 240, 245, 250
值范围：
0
≤
Threshold
≤
255
最小增量： 1
建议增量： 5
read_image(&Image,"monkey"); disp_image(Image,WindowHandle); draw_rectangle2(WindowHandle,&Row,&Column,&Phi,&Length1,&Length2); gen_rectangle2(&Rectangle,Row,Column,Phi,Length1,Length2); reduce_domain(Image,Rectangle,&Template); exhaustive_match_mg(Image,Template,&ImageMatch,'dfd'1,30); invert_image(ImageMatch,&ImageInvert); local_max(ImageInvert,&BestFit); disp_region(BestFit,WindowHandle);
如果参数值正确，算子
exhaustive_match_mg 返回值 2 ( H_MSG_TRUE )。如果输入为空（没有可用输入图像）则可设置行为通过
set_system('no_object_result',<Result>)。如有必要，则抛出异常。
基础