基于这个答案 https://stackoverflow.com/a/769221/544721 ,我在抓取区域中制作了以下代码打印值:
import sys
from PyQt4.QtGui import QPixmap, QApplication
app = QApplication(sys.argv)
# img is QImage type
img = QPixmap.grabWindow(
QApplication.desktop().winId(),
x=00,
y=100,
height=20,
width=20,
).toImage()
for x in range(0,20):
for y in range(0,20):
print( "({},{}) = {}".format( x,y,(img.pixel(x,y)) ) )
但像素显示如下:
(0,0) = 4285163107
(0,1) = 4285163107
(0,2) = 4285163107
(0,3) = 4285163107
(0,4) = 4285163107
(0,5) = 4285163107
如何获得
QImage
(从 QPixmap
获得)像素的 RGB 值? (最好是在 16,24,32 屏幕位深度下工作的解决方案)?示例输出:
(0,0) = (0,0,0)
...
(10,15) = (127,15,256)
(Linux 解决方案,用 Python3 编写)
最佳答案
您看到的问题是从 img.pixel() 返回的数字实际上是一个 QRgb 值,它是一个独立于格式的值。然后,您可以将其转换为正确的表示形式:
import sys
from PyQt4.QtGui import QPixmap, QApplication, QColor
app = QApplication(sys.argv)
# img is QImage type
img = QPixmap.grabWindow(
QApplication.desktop().winId(),
x=00,
y=100,
height=20,
width=20,
).toImage()
for x in range(0,20):
for y in range(0,20):
c = img.pixel(x,y)
colors = QColor(c).getRgbF()
print "(%s,%s) = %s" % (x, y, colors)
输出
(0,0) = (0.60784313725490191, 0.6588235294117647, 0.70980392156862748, 1.0)
(0,1) = (0.60784313725490191, 0.6588235294117647, 0.70980392156862748, 1.0)
(0,2) = (0.61176470588235299, 0.6588235294117647, 0.71372549019607845, 1.0)
(0,3) = (0.61176470588235299, 0.66274509803921566, 0.71372549019607845, 1.0)
QImage docs:
关于python - 如何获取 QPixmap 或 QImage 像素的 RGB 值 - Qt、PyQt,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/9134597/