问题描述
我有一个原始图像，其中每个像素对应一个16位无符号整数。我正在尝试使用PIL Image.fromstring（）函数读取，如下面的代码所示：
I have a raw image where each pixel corresponds to a 16 bits unsigned integer. I am trying to read using the PIL Image.fromstring() function as in the following code:
if __name__ == "__main__":
if (len(sys.argv) != 4):
print 'Error: missing input argument'
sys.exit()
file = open(sys.argv[1], 'rb')
rawData = file.read()
file.close()
imgSize = (int(sys.argv[2]), int(sys.argv[3]))
# Use the PIL raw decoder to read the data.
# - the 'F;16' informs the raw decoder that we are reading a little endian, unsigned integer 16 bit data.
img = Image.fromstring('L', imgSize, rawData, 'raw', 'F;16')
im.save('out.png')
PIL文档通知fromstring（）函数的第一个参数是'mode'。然而，看文档和谷歌搜索，我无法找到关于该论点的真正含义的细节（我相信它与色彩空间或类似的东西有关）。有谁知道我在哪里可以找到关于fromstring（）函数的更详细的参考以及mode参数的含义？
The PIL documentation informs that the first argument of the fromstring() function is 'mode'. However, looking at the documentation and googling I wasn't able to find details about what that argument really means (I believe that it is related to the color space or something like that). Does anyone knows where I can find a more detailed reference about the fromstring() function and what the mode argument means?
推荐答案
具体文件见：
- 1（1位像素，黑白，每字节存储一个像素）
- L（8位像素，黑白）
- P（8位像素，映射到任意使用调色板的其他模式）
- RGB（3x8位像素，真彩色）
- RGBA（4x8位像素，真彩色透明）掩码）
- CMYK（4x8位像素，分色）
- YCbCr（3x8位像素，彩色视频格式）
- I（32位有符号整数像素）
- F（32位浮点像素）
- 1 (1-bit pixels, black and white, stored with one pixel per byte)
- L (8-bit pixels, black and white)
- P (8-bit pixels, mapped to any other mode using a colour palette)
- RGB (3x8-bit pixels, true colour)
- RGBA (4x8-bit pixels, true colour with transparency mask)
- CMYK (4x8-bit pixels, colour separation)
- YCbCr (3x8-bit pixels, colour video format)
- I (32-bit signed integer pixels)
- F (32-bit floating point pixels)
PIL还为
a少数特殊模式提供有限支持，包括LA（L
with alpha），RGBX（真彩色带
填充）和RGBa（真彩色）与
预乘alpha）。
PIL also provides limited support for a few special modes, including LA (L with alpha), RGBX (true colour with padding) and RGBa (true colour with premultiplied alpha).
这篇关于如何使用PIL读取原始图像？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！