怎么使用matlab simulink中的系统生成器在FPGA上实现Canny Edge检测

你好，
我正在尝试使用matlab simulink中的系统生成器在FPGA上实现Canny Edge检测。
我使用高斯滤波器进行平滑，使用Sobel进行渐变。
在他们之后，我应该做非锐利边缘的最大抑制操作。
我知道我可以通过S-function编写它。
但是我对S-function一无所知，到目前为止我还没有用它。
基于以下文本，我发现它可以通过一些寄存器和比较块来实现。
但我不知道怎么做。
3.3.4阈值处理＆amp;
NMS阈值和NMS都使用比较器和寄存器块实现。
如果图像数据大于比较值，则将每个图像数据与特定值进行比较，然后传送图像数据，否则将值设置为零。
在NMS中，检查每个图像数据是否大于其相邻图像数据。
如果是，则传递图像数据，否则将其设置为零。
你能指导一下非最大限度抑制的实施吗？
谢谢
附上了文本来源。
pxc3905124.pdf 908 KB



以下为原文

Hello,
I'm trying to implement Canny Edge detection on FPGA by using system generator in matlab simulink.

I'm using Gaussian filter for smoothing and Sobel for gradient. after them I should do Non-maximum supression operation that sharp the edge.
I know I can write it through S-function. But I don't know anything about S-function and I didn't work with it up to now. based on below text I found that it can be implement by some register and comparison block. But I don't know how.

3.3.4 Thresholding& NMS Thresholding and NMS, both are implemented using Comparator and Register block. Each of the image data is compared with a certain value if the image data is greater than the comparing value then that image data is transferred otherwise the value is set zero. In NMS, each image data is checked whether it’s greater than its adjacent image data or not. If it’s true then the image data is passed otherwise it is set zero.


Could you please guide me about Non-Maximum Supression Implementation?
Thanks


The source of text was attached.

            pxc3905124.pdf ‏908 KB