如何识别矩形圆形面积,我识别圆形有时候会打印矩形,怎么更改一下。
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import sensor, image, time from pyb import UART import json black_threshold = (0, 20, -18, 127, -8, 22) #black green_threshold = (0, 70, -128, -28, 22, 127) #green red_threshold = (0, 50, -128, 127, 12, 127) #red sensor.reset() sensor.set_pixformat(sensor.RGB565) sensor.set_framesize(sensor.QQVGA) sensor.skip_frames(time = 2000) sensor.set_auto_gain(False) # must be turned off for color tracking sensor.set_auto_whitebal(False) # must be turned off for color tracking clock = time.clock() while(True): clock.tick() img = sensor.snapshot() #识别形状颜色 for c in img.find_circles(threshold = 3500, x_margin = 10, y_margin = 10, r_margin = 10,r_min = 2, r_max = 100, r_step = 2): img.draw_circle(c.x(), c.y(), c.r(), color = (255, 0, 0)) output_str="[%d,%d,%d]" % (c.x(),c.y(),c.r()) print("形状:圆形",output_str) uart.write(output_str+'\r\n') statistics=img.get_statistics(roi = (c.r(), c.r(), 2 * c.r(), 2 * c.r())) blobs = img.find_blobs([red_threshold,green_threshold,black_threshold],roi=(c.r(), c.r(), 2 * c.r(), 2 * c.r())) if blobs: max_blob = find_max(blobs) img.draw_rectangle(max_blob[0:4]) # rect img.draw_cross(max_blob[5], max_blob[6]) # cx, cy else: pass for r in img.find_rects(threshold = 10000): img.draw_rectangle(r.rect(), color = (255, 0, 0)) output_str="[%d,%d,%d,%d]" % (r.x(),r.y(),r.w(),r.h()) print("形状:矩形",output_str) uart.write(output_str+'\r\n') area = r.rect() blobs = img.find_blobs([red_threshold,green_threshold,black_threshold],roi=area) if blobs: max_blob = find_max(blobs) img.draw_rectangle(max_blob[0:4]) # rect img.draw_cross(max_blob[5], max_blob[6]) # cx, cy else: pass
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把所有的draw_rectangle删除,否则会影响后面的查找矩形。