Fix segmentation contuors on low quality images

when using the same image with low quality
![temp](https://user-images.githubusercontent.com/42910789/159570091-85e9f6ff-8bbf-45b1-8b36-fe5ce166c654.png)
![imgContoure2](https://user-images.githubusercontent.com/42910789/159570541-fccb246f-fc6b-441d-98a0-b6bdcca7b817.png)

`
for cnt in contours1:
    area = cv2.contourArea(cnt)
    if area > 30000:
`