我想将bgr转换为rgb,但出现“ TypeError:参数'src'的预期cv :: UMat”错误
pip freeze:
greenlet==0.4.15
msgpack==0.6.1
mss==4.0.3
numpy==1.17.0
opencv-python==4.1.0.25
Pillow==6.1.0
pywin32==224
import numpy as np
import cv2
from mss import mss
from PIL import Image
from win32api import GetSystemMetrics
sct = mss()
(w, h) = (GetSystemMetrics(0) // 2, GetSystemMetrics(1) * 2 // 3)
(margin_l, margin_t) = (GetSystemMetrics(0) // 4, GetSystemMetrics(1)
// 3)
while True:
monitor = {
'top': margin_t,
'left': margin_l,
'width': w,
'height': h,
}
img = Image.frombytes('RGB', (w, h), sct.grab(monitor).rgb)
# img = cv2.cvtColor(img, cv2.COLOR_BGR2RGB)
cv2.imshow('DEBUG', np.array(img))
if cv2.waitKey(25) & 0xFF == ord('q'):
cv2.destroyAllWindows()
break
img = cv2.cvtColor(img,cv2.COLOR_BGR2RGB)不能更改“颜色空间”,但是如果没有此字符串,代码就可以正常工作,但是所有红色都是蓝色。
答案 0 :(得分:0)
捕获下方颜色正确的屏幕的更好方法
# -*- coding: utf-8 -*-
import numpy as np
from PIL import ImageGrab
import cv2
from win32api import GetSystemMetrics
bbox = (GetSystemMetrics(0)//5, GetSystemMetrics(1)//3, GetSystemMetrics(0)//1.3, GetSystemMetrics(1))
while(True):
printscreen = np.array(ImageGrab.grab(bbox=bbox))
printscreen = cv2.cvtColor(printscreen, cv2.COLOR_BGR2RGB)
cv2.imshow('window', printscreen)
if cv2.waitKey(25) & 0xFF == ord('q'):
cv2.destroyAllWindows()
break
答案 1 :(得分:0)
此代码对我有效,但需要进行以下调整:
monitor
的定义移出了while
之外。with
上下文管理器用于MSS。img.rgb
的访问权限(这减慢了整个过程的速度)。monitor = {
'top': margin_t,
'left': margin_l,
'width': w,
'height': h,
}
with mss() as sct:
while True:
# Grab it
img = np.array(sct.grab(monitor))
# Convert from BGRA to RGB
img = cv2.cvtColor(img, cv2.COLOR_BGRA2RGB)
# Display
cv2.imshow('DEBUG', img)
if cv2.waitKey(25) & 0xFF == ord('q'):
cv2.destroyAllWindows()
break