canny算子—快速边缘检测

基于OpenMV平台进行开发

按照官方例程进行实验

实验结果：

程序代码：

import sensor, image, time

sensor.reset() # Initialize the camera sensor.

sensor.set_pixformat(sensor.GRAYSCALE) # or sensor.RGB565

sensor.set_framesize(sensor.QQVGA) # or sensor.QVGA (or others)

sensor.skip_frames(30) # Let new settings take affect.

sensor.set_gainceiling(8)

clock = time.clock() # Tracks FPS.

while(True):

    clock.tick() # Track elapsed milliseconds between snapshots().

    img = sensor.snapshot() # Take a picture and return the image.

    # Use Canny edge detector

    img.find_edges(image.EDGE_CANNY, threshold=(50, 80))

    # Faster simpler edge detection

    #img.find_edges(image.EDGE_SIMPLE, threshold=(100, 255))