Opencv Python显示原始图像 [英] Opencv Python display raw image

问题描述

我无法弄清楚如何显示包含640x480像素信息的原始图像，每个像素为8位。 （灰色图像）

I can't figure out how to display a raw image wich conatains 640x480 pixel information, each pixel 8 bit. (Gray image)

我需要从np数组转到Mat格式才能显示图像。

I need to go from an np array to Mat format to be able to display the image.

#!/usr/bin/python
import numpy as np
import cv2
import sys
# Load image as string from file/database    
fd = open('flight0000.raw')
img_str = fd.read()
fd.close()

img_array = np.asarray(bytearray(img_str), dtype=np.uint8)

img = ... Conversion to Mat graycolor

cv2.imshow('rawgrayimage', img)
cv2.waitKey(0)

如此与cv，cv2混淆。我已经尝试了一段时间，但我找不到解决方案。

It so confusing with the cv ,cv2. I have been trying for a while now, but i can't find the solution.

推荐答案

.RAW文件不受支持OpenCV 查看imread ，

.RAW files are not supported in OpenCV see imread,

但该文件可以用Python打开并用Numpy解析

But the file can be opened with Python and parsed with Numpy

import numpy as np
fd = open('flight0000.raw', 'rb')
rows = 480
cols = 640
f = np.fromfile(fd, dtype=np.uint8,count=rows*cols)
im = f.reshape((rows, cols)) #notice row, column format
fd.close()

这使得一个numpy数组可以被OpenCV直接操作

This makes a numpy array that can be directly manipulated by OpenCV

import cv2
cv2.imshow('', im)
cv2.waitKey()
cv2.destroyAllWindows()

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