image-processing - Search for segment similarity inside strokes

Question

i am looking for a technique or a known method to search a part of similar segments in a handwritten text.

its a kind of image retrieval, but rather than searching for an entire word or character, i want to search similar parts of strokes given a pattern as input image.

the figure below illustrate this process, where the red segments are input images and red rectangles represent part of text similar to the input.

by "similar", i mean "approximately", not exact matching

thanks in advance

Answer 1

我相信Shape Context可以帮助您完成任务。你可以在这里阅读更多关于它的信息。
形状上下文描述符允许您稳健地描述局部形状。找到两个几乎相同的形状上下文描述符强烈表明底层文本模式非常相似。

您可以在项目主页中找到 Matlab 实现。