Img = omstring('CMYK', imgSize, rawData)Īnd you'll see what the different modes do - try it with a variety of input images: png with alpha, png without alpha, bmp, gif, and jpeg. For instance, try this with an image: i = Image.open('image.png') Similarly, trying to read a CMYK encoded image as RGB (or RGBA) will make your image look very much not like it's supposed to. This will be magnified depending on how large your image, but it will really make your colors go wonky. If you decode an RGB image as RGBA, you'll end out reading the R pixel to the right of the first pixel as your alpha, which means you'll get the G pixel as your R value.

For Alpha you add another byte to each pixel. In regular RGB you have 3 bytes per pixel - 0-254, 0-254, 0-254. If not, Wikipedia has a great article.Īs for what it really means (if that's not enough): pixel values will be encoded differently for each colorspace. Of course I assume that if you know about PIL you also know about colorspaces. I'm not sure what 'L' stands for, but 'RGBA' stands for Red-Green-Blue-Alpha, so I presume RGBX is equivalent to RGB (edit: upon testing this isn't the case)? CMYK is Cyan-Magenta-Yellow-Kelvin, which is another type of colorspace. For other modes, this function behaves like a corresponding call to the fromstring function. Not all modes can share memory supported modes include 'L', 'RGBX', 'RGBA', and 'CMYK'. For some modes, the image memory will share memory with the original buffer (this means that changes to the original buffer object are reflected in the image). Creates an image memory from pixel data in a string or buffer object, using the standard 'raw' decoder. Creates an image memory from pixel data in a string or buffer object, using the standard 'raw' decoder. Does anyone knows where I can find a more detailed reference about the fromstring() function and what the mode argument means? 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). The PIL documentation informs that the first argument of the fromstring() function is 'mode'. With Fileloupe, you can quickly browse photos, watch videos, read PDFs and. Img = omstring('L', imgSize, rawData, 'raw', 'F 16') Fileloupe is a lightweight, incredibly high performance media browser for macOS. # - the 'F 16' informs the raw decoder that we are reading a little endian, unsigned integer 16 bit data. # Use the PIL raw decoder to read the data.

I am trying to read using the PIL omstring() function as in the following code: if _name_ = '_main_': I have a raw image where each pixel corresponds to a 16 bits unsigned integer.

Fileloupe raw images