识别矩形时识别对象不稳定，经常框到图像边缘

[syxh]

# Untitled - By: Misaki - 周六 12月 19 2020

import sensor, image, time

sensor.reset()
sensor.set_pixformat(sensor.GRAYSCALE)
#sensor.set_pixformat(sensor.RGB565)
sensor.set_framesize(sensor.QQVGA)
sensor.skip_frames(time = 2000)

clock = time.clock()
def find_max(rects):
    max_size=0
    max_rect=rects
    for rect in rects:
        if rect[2]*rect[3] > max_size:
            max_rect=rects
            max_size = rect[2]*rect[3]
    return max_rect
def find_max_rects(img):
    rects=img.find_rects(threshold=12000)
    for max_rect in find_max(rects):
        img.draw_rectangle(max_rect.rect(), color = (255, 255, 255))
        #img.draw_edges(max_rect.corners(), color = (255, 255, 255))

        return max_rect
    else:
        return 0
while(True):
    clock.tick()
    img = sensor.snapshot().gaussian(1).find_edges(image.EDGE_CANNY,threshold=(50, 90))
    print(find_max_rects(img))
    '''for c in img.find_circles(threshold = 2500, x_margin =10, y_margin = 10, r_margin = 10,r_min = 50, r_max = 200, r_step = 2):
        img.draw_circle(c.x(), c.y(), c.r(), color = (255, 255, 255))
        print(c)
    for l in img.find_line_segments(merge_distance = 0, max_theta_diff = 0):
        img.draw_line(l.line(), color = (255, 0, 0))
        print(l)'''

    print(clock.fps())

[kidswong999]

你这个是img.find_circles啊，也不是矩形啊。