Program stuck problem and Copy memory overflow

Project Discussion
1

Excuse me, please help me find out what is wrong with the following code, and why OpenMV always gets stuck and disconnected at the code

roi.find_keypoints(threshold=5,scale_facter=1.2,max_keypoints=150)

during execution. connect. Hope you can give me some advice.The following is the entire code of the program

import sensor, image, time
import sensor, image

sensor.reset()
sensor.set_pixformat(sensor.GRAYSCALE)
sensor.set_framesize(sensor.UXGA)
sensor.skip_frames(time=2000)
sensor.set_windowing((128,368,1400,706))

template = image.Image(“/model1.pgm”)
print(template)
kpts2 = template.find_keypoints(threshold=5,scale_facter=1.2,max_keypoints=150)
print(type(kpts2)) 

while True:
img = sensor.snapshot()

blobs = img.find_blobs([(178, 251)],area_threshold=1000)

if blobs:
    print(blobs)

    for blob in blobs:
      
        x, y = blob.cx(), blob.cy()
        
   
        roi = img.crop(blob.rect())
        print(roi)

        kpts1 = roi.find_keypoints(threshold=5,scale_facter=1.2,max_keypoints=150)
        print(type(kpts1))
    

        if len(kpts1) > 0:
            match = image.match_descriptor(kpts2, kpts1, threshold=75)
            if match:
          
                img.draw_rectangle(blob.rect(), color=(255, 0, 0))  
time.sleep(3)
print(clock.fps())

If I replace corp with copy, there will be a memory overflow.

2

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