- threshold(InDepth, Region, MinHeight, MaxHeight)
- get_region_points(Region, Rows, Columns)
- get_grayval(InDepth, Rows, Columns, Grayval)
- gen_image_proto(InDepth, ImageCleared, MinHeight)
- set_grayval(ImageCleared, Rows, Columns, Grayval)
- scale_image_range(ImageCleared, ImageScaled, MinHeight, MaxHeight)
- convert_image_type(ImageScaled, ImageConverted, 'byte')
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