如何从python opencv中的数组读取原始png?

本文介绍了如何从python opencv中的数组读取原始png?的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我正在通过TCP将iPhone中的png图像流式传输到MacBook. MacBook代码来自 docs.python/library/socketserver. html#requesthandler-objects .如何转换图像以用于OpenCV?选择png是因为它们有效，但是可以使用其他格式.

I'm streaming a png image from my iPhone to my MacBook over tcp. The MacBook code is from docs.python/library/socketserver.html#requesthandler-objects. How can the image be converted for use with OpenCV? A png was selected because they are efficient, but other formats could be used.

我编写了一个测试程序，该程序从文件中读取rawImage，但不确定如何将其转换:

I wrote a test program that reads the rawImage from a file, but not sure how to convert it:

# Read rawImage from a file, but in reality will have it from TCPServer f = open('frame.png', "rb") rawImage = f.read() f.close() # Not sure how to convert rawImage npImage = np.array(rawImage) matImage = cv2.imdecode(rawImage, 1) #show it cv.NamedWindow('display') cv.MoveWindow('display', 10, 10) cv.ShowImage('display', matImage) cv. WaitKey(0)

推荐答案

我知道了:

# Read rawImage from a file, but in reality will have it from TCPServer f = open('frame.png', "rb") rawImage = f.read() f.close() # Convert rawImage to Mat pilImage = Image.open(StringIO(rawImage)); npImage = np.array(pilImage) matImage = cv.fromarray(npImage) #show it cv.NamedWindow('display') cv.MoveWindow('display', 10, 10) cv.ShowImage('display', matImage) cv. WaitKey(0)