帧率只有零点几是怎么回事 只有两层for循环
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# Untitled - By: SAU - 周二 2月 28 2023 import sensor, image, time,math,gc sensor.reset() sensor.set_pixformat(sensor.GRAYSCALE) sensor.set_framesize(sensor.QQVGA) sensor.skip_frames(10) clock = time.clock() while(True): clock.tick() img = sensor.snapshot() img.gaussian(1) grad = [[0 for i in range(img.height())] for j in range(img.width())] for i in range(1, img.width()- 1): for j in range(1, img.height() - 1): grad_x = 2*img.get_pixel(i+1,j) + img.get_pixel(i+1,j-1) + img.get_pixel(i+1,j+1) - 2*img.get_pixel(i-1,j) - img.get_pixel(i-1,j-1) - img.get_pixel(i-1,j+1) grad_y = 2*img.get_pixel(i,j+1) + img.get_pixel(i-1,j+1) + img.get_pixel(i+1,j+1) - 2*img.get_pixel(i,j-1) - img.get_pixel(i-1,j-1) - img.get_pixel(i+1,j-1) grad_x = math.floor(grad_x / 4) grad_y = math.floor(grad_y / 4) #合梯度 grad[i][j] = math.floor(math.sqrt(grad_x * grad_x + grad_y * grad_y)) img.set_pixel(i,j,(math.floor(math.sqrt(grad_x * grad_x + grad_y * grad_y)))) print(clock.fps())
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自己遍历整个图片,帧率当然低。
https://book.openmv.cc/example/04-Image-Filters/edge-filter.html