图像分割

read_image (Image, 'fabrik')
dev_close_window ()
get_image_size (Image, Width, Height)
dev_open_window (0, 0, Width, Height, 'black', WindowID)
dev_display (Image)
dev_set_draw ('margin')
dev_set_color ('red')
* Create two rectangles parallel to the coordinate axes
gen_rectangle1 (Rectangle1, 351, 289, 407, 340)
dev_set_color ('green')
gen_rectangle1 (Rectangle2, 78, 178, 144, 244)
gray_histo (Rectangle1, Image, AbsoluteHisto1, RelativeHisto1)
gray_histo (Rectangle2, Image, AbsoluteHisto2, RelativeHisto2)
dev_set_color ('red')
* Convert a histogram created with gray_histo into a region
gen_region_histo (Histo1, AbsoluteHisto1, 255, 255, 1)
dev_set_color ('green')
gen_region_histo (Histo2, AbsoluteHisto2, 255, 255, 1)

gray_histo(Regions, Image:::AbsolutEHisto，RelativeHisto)

作用:获得图像指定区域内的灰度分布

gen_region_histo(:Region：Histogram，Row, Column, Scale:）

作用: 把获得的灰度分布转换为区域region

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char_threshold.hdev (白纸黑字）

dual_threshold.hdev（汽车动态检测）

dyn_threshold.hdev (凸点检测)

var_threshold.hdev (label检测)

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