https://docs.singtown.com/micropython/zh/latest/openmvcam/library/omv.sensor.html

所有有关sensor的调节都在文档里，对比度，亮度，饱和度，曝光等。

在OpenMV4 Plus上是可以的。

import sensor, image, time

sensor.reset()
sensor.set_pixformat(sensor.RGB565)
sensor.set_framesize(sensor.QVGA)
sensor.skip_frames(time = 2000)

clock = time.clock()

while(True):
    clock.tick()
    color = sensor.snapshot()
    grayscale = cplor.copy().to_grayscale()
    print(clock.fps())

你看看是不是sensor模块没安装稳定，螺丝是不是没装。如果不是的话，就寄回维修。

image库，sensor库，函数不是python语言写的，是c语言写的。编译成二进制烧录在电路板里。

我使用官方的板子，OpenMV4 H7 Plus，sensor OV5640，不是你这个报错。你确定你用的是官方的板子？

import sensor, image
from pyb import UART
uart = UART(3, 115200)
uart.init(115200,bits=8,parity=None,stop=1)
sensor.reset()
sensor.set_pixformat(sensor.RGB565)
sensor.set_framesize(sensor.QQVGA) # can be QVGA on M7...sensor.skip_frames(30) # 修改sensor配置之后， 跳过30帧
sensor.set_auto_gain(False)
while(True):
img = sensor.snapshot()
img.lens_corr(1.8)
lit=[0]
ti="0"
pats="0"
sui=[0,0,0]
for code in img.find_qrcodes():
for i in lit:
for i in code.payload():
lit=[i]
ti=lit[0]
pats=int(ti)
sui=pats
print(sui)
uart.write(sui)/＊＊＊就是这里错了，其他的都对

主要想解决二维码提取信息的时候 提取出 payload对应的信息

AttributeError: 'qrcode' object has no attribute 'get' 报错

代码
import sensor, image

sensor.reset()
sensor.set_pixformat(sensor.RGB565)
sensor.set_framesize(sensor.QQVGA) # can be QVGA on M7...
sensor.skip_frames(30) # 修改sensor配置之后， 跳过30帧
sensor.set_auto_gain(False) # must turn this off to prevent image washout...
while(True):
img = sensor.snapshot()
img.lens_corr(1.8) # strength of 1.8 is good for the 2.8mm lens.
for code in img.find_qrcodes():
print(code.get("payload"))

import sensor, image, time
from pyb import UART
sensor.reset() # Reset and initialize the sensor.
sensor.set_pixformat(sensor.RGB565) # Set pixel format to RGB565 (or GRAYSCALE)
sensor.set_framesize(sensor.QVGA) # Set frame size to QVGA (320x240)
sensor.skip_frames(time = 2000) # Wait for settings take effect.
clock = time.clock()
uart=UART(3,9600)# Create a clock object to track the FPS.
uart.init(9600,bits=8,parity=None,stop=1)
list=[1,1,2]
while(True):

clock.tick() 
uart.write(list)

我现在这样写他会出现 需要具有缓冲协议的对象，该怎么改。

测试代码

import sensor, image, time
import utime
sensor.reset()                      # Reset and initialize the sensor.
sensor.set_pixformat(sensor.RGB565) # Set pixel format to RGB565 (or GRAYSCALE)
sensor.set_framesize(sensor.QVGA)   # Set frame size to QVGA (320x240)
sensor.skip_frames(time = 2000)     # Wait for settings take effect.

while(True):
    img = sensor.snapshot()         # Take a picture and return the image.
    start = utime.ticks_ms()
    img.save('example.bmp')
    delta = utime.ticks_diff(utime.ticks_ms(), start)
    print(delta)

测试结果：250ms

250
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240

图像大小：QVGA
SD卡：白色 闪迪 8G C10

import sensor, image, time
sensor.reset() # 初始化sensor
sensor.set_pixformat(sensor.RGB565) 
sensor.set_framesize(sensor.QQVGA) 
sensor.skip_frames(time = 2000)
clock = time.clock() 
while(True):
    clock.tick() 
    img = sensor.snapshot() # 拍一张照片，返回图像
    img1 = img.mean(2)#均值滤波后的图像
    for i in range(0,img.width()):
        for j in range(0,img.height()):
            tuple1 = img.get_pixel(i,j)
            tuple2 = img1.get_pixel(i,j)
            tuple3 = (tuple1[0]-tuple2[0],tuple1[1]-tuple2[1],tuple1[2]-tuple2[2])
            print(tuple1)
            print(tuple2)
            print(tuple3)
    print(clock.fps())