更换摄像头识别数字就会卡屏？

[kynd]

使用原来的摄像头识别数字没问题，换成新的摄像头后，其他程序都没变，但是运行时就会卡主，需要重新连接USB才能运行，这是为什么？

[kidswong999]

提供具体的代码，硬件型号，固件版本，我才能测试。

[kynd]

# Template Matching Example - Normalized Cross Correlation (NCC)
#
# This example shows off how to use the NCC feature of your OpenMV Cam to match
# image patches to parts of an image... expect for extremely controlled enviorments
# NCC is not all to useful.
#
# WARNING: NCC supports needs to be reworked! As of right now this feature needs
# a lot of work to be made into somethin useful. This script will reamin to show
# that the functionality exists, but, in its current state is inadequate.

# Always pass UART 3 for the UART number for your OpenMV Cam.
# The second argument is the UART baud rate. For a more advanced UART control
# example see the BLE-Shield driver.

import json
from pyb import UART
import time, sensor, image
from image import SEARCH_EX, SEARCH_DS
from pyb import UART

uart = UART(3,9600)
uart.init(9600,bits=8,parity=None,stop=1)
#while(True):
    #uart.write("Hello World!\r")
    #time.sleep_ms(1000)


# Reset sensor
sensor.reset()

# Set sensor settings
sensor.set_contrast(1)
sensor.set_gainceiling(16)
# Max resolution for template matching with SEARCH_EX is QQVGA
sensor.set_framesize(sensor.QQVGA)
# You can set windowing to reduce the search image.
#sensor.set_windowing(((640-80)//2, (480-60)//2, 80, 60))
sensor.set_pixformat(sensor.GRAYSCALE)
# Load template.
# Template should be a small (eg. 32x32 pixels) grayscale image.

template1 = image.Image("/1.pgm")
template2 = image.Image("/2.pgm")
template3 = image.Image("/3.pgm")
template4 = image.Image("/4.pgm")
template5 = image.Image("/5.pgm")
template6 = image.Image("/6.pgm")
template7 = image.Image("/7.pgm")
template8 = image.Image("/8.pgm")

clock = time.clock()

# Run template matching
while (True):
    clock.tick()
    img = sensor.snapshot()

    # find_template(template, threshold, [roi, step, search])
    # ROI: The region of interest tuple (x, y, w, h).
    # Step: The loop step used (y+=step, x+=step) use a bigger step to make it faster.
    # Search is either image.SEARCH_EX for exhaustive search or image.SEARCH_DS for diamond search
    #
    # Note1: ROI has to be smaller than the image and bigger than the template.
    # Note2: In diamond search, step and ROI are both ignored.


    r1 = img.find_template(template1, 0.70, step=4, search=SEARCH_EX) #, roi=(10, 0, 60, 60))
    if r1:
        img.draw_rectangle(r1)
        print(1)
        uart.write("1")
        a=1

    r2 = img.find_template(template2, 0.70, step=4, search=SEARCH_EX) #, roi=(10, 0, 60, 60))
    if r2:
        img.draw_rectangle(r2)
        print(2)
        uart.write("2")
        a=2

    r3 = img.find_template(template3, 0.70, step=4, search=SEARCH_EX) #, roi=(10, 0, 60, 60))
    if r3:
        img.draw_rectangle(r3)
        print(3)
        uart.write("3")
        a=3

    r4 = img.find_template(template4, 0.70, step=4, search=SEARCH_EX) #, roi=(10, 0, 60, 60))
    if r4:
        img.draw_rectangle(r4)
        print(4)
        uart.write("4")
        a=4

    r5 = img.find_template(template5, 0.70, step=4, search=SEARCH_EX) #, roi=(10, 0, 60, 60))
    if r5:
        img.draw_rectangle(r5)
        print(5)
        uart.write("5")
        a=5

    r6 = img.find_template(template6, 0.70, step=4, search=SEARCH_EX) #, roi=(10, 0, 60, 60))
    if r6:
        img.draw_rectangle(r6)
        print(6)
        uart.write("6")
        a=6

    r8 = img.find_template(template1, 0.40, step=4, search=SEARCH_EX) #, roi=(10, 0, 60, 60))
    if r8:
        img.draw_rectangle(r8)
        print(8)
        uart.write("8")
        a=8

    r7 = img.find_template(template7, 0.70, step=4, search=SEARCH_EX) #, roi=(10, 0, 60, 60))
    if r7:
        img.draw_rectangle(r7)
        print(7)
        uart.write("7")
        a=7

        while(True):
            output = json.dumps(a) 
            print(output) 
            uart.write(output)

[kynd]

摄像头是H7 R1的

[kidswong999]

你最后有一个死循环，永远跳不出。

[kynd]

问题是我#之后显示indentationerror咋 解决

[kynd]

@kidswong999 噢解决了感谢！