the digital images are composed of griddling with fixed space between each other, so the simplest chain codes is following the verge and give the direction-value to the linked line of every two adjacent pixels.
数字图像一般是按固定间距的网格采集的,所以最简单的链码是跟踪边界并赋给每2个相邻像素的连线1个方向值。
longitudinal griddling community health care and teleophthalmology
纵向网格的社区医疗与远程眼科
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