Контурное кодирование полутонового изображения: выделение контурной информации на изображении

The paper considers the allocation of the contour information of the image – the first part of the first phase (contour image coding) of the method of contour compression of grayscale images. It was determined that the most effective by the substantial accuracy of contour detail on the halftone image is the Canny detector, which allows you to get the clear contour "map" of the image, despite the fact that by the time spent on the work of the Canny detector is much lower than competitors