CV_8U is unsigned 8bit/pixel - ie a pixel can have values 0-255, this is the normal range for most image and video formats. CV_32F is float - the pixel can have any value between 0-1.0, this is useful for some sets of calculations on data - but it has to be converted into 8bits to save or display by multiplying each pixel by 255. CV_32S is a signed 32bit integer value for each pixel - again ...
I'm working with the HCS12 MCU, and this was part of the library. I'm just wondering what the 1U, 2U, 4U, 8U... means in this code. I'm still learning how to use classes, please try to explain thi...
In OpenCV, is there a difference between CV_8U and CV_8UC1? Do they both refer to an 8-bit unsigned type with one channel? If so, why are there two names? If not, what's the difference?
Where 8u means each element will be unsigned (only positive) integers, 8-bit. The reason there are 4 channels (like 4 slices that layer together to make an image of different colours) is to make up the image. The first 3 in this are R, G, B, and the last is Alpha, which is a value between 0 and 1 representing transparency.
I want to convert an image of type CV_64FC1 to CV_8UC1 in Python using OpenCV. In C++, using convertTo function, we can easily convert image type using following code snippet: image.convertTo(ima...
Your data has dtype int16 (signed integer). cvtColor only accepts uint8, uint16, and float32. Those are CV_8U, CV_16U, and CV_32F in OpenCV parlance, which have the numerical values 0, 2, 5. Solution: use a supported dtype. It seems that skvideo.io.vread already returns data in uint8. Just drop the superfluous np.array(..., dtype=np.int16 ...
I tried a lot of constant values but I cannot find any difference between cvtype values. What is it used for? I tried values like CV_8UC4 and CV_16S. I did not find this information in references.
I was surprised when I couldn't find anything in OpenCV documentation describing - with words - what the various types stand for, and Googling wasn't much help either. I know that CV_8UC1 is gray-s...
I tried to display an image of CV_32F type using imshow function but it showed a WHITE image. In the Documentation its given that floating point images will be mapped to 0-255 and displayed but it ...
