What are the trade-offs for using VPP vs. IPP for RGB to NV12 color conversion? I am currently using IPP but am unsure what the implication would be for switching to VPP. Is VPP a GPU implementation of color conversion on the GPU's EUs?
I'm in the middle of googling this as well. By far, i've learnt some interesting info: RGB is a color space, but YCbCr(444?) is rather a way of encoding RGB. RGB was primarily designed for PC displays, but modern TVs, which are increasing popularity as a PC displays, are "learning" to work with RGB as well.Therefore, the RGB subtypes in DirectShow do not match the RGB subtypes in Media Foundation. The D3DFORMAT enumeration is defined in the header file d3d9types.h. The following table shows the most common uncompressed RGB formats and the corresponding D3DFORMAT value. 与我们熟知的rgb类似，yuv也是一种颜色编码方法，主要用于电视系统以及模拟视频领域，它将亮度信息（y）与色彩信息（uv）分离，没有uv信息一样可以显示完整的图像，只不过是黑白的，这样的设计很好地解决了彩色电视机与黑白电视的兼容问题。 Okay, so you’ve read the articles on Luminance vs Chrominance, the meaning of Y’CbCr, and the meaning of the numbers in chroma sub-sampling.But you’re still confused about the difference between RGB 444 and Y’CbCr 444. Another interesting method of doing YUV to RGB conversion for the purpose of displaying video is to use programmable pixel shaders. You can almost pull it off on a Geforce3 but the GeforceFX and Radeon 9700/9800 cards are advanced enough that you can pass 32 bit YCrCb textures to the video card and do all conversion calculations on the video card.
Jul 31, 2013 · This is an update to my previous entry covers: – YUV420p & YUV422 (UYVY) YUV420p to RGB & view UYVY/YUV422 to RGB and view: Jul 01, 2018 · pls ignore
nv12 Related to I420, NV12 has one luma "luminance" plane Y and one plane with U and V values interleaved. In NV12, chroma planes (blue and red) are subsampled in both the horizontal and vertical dimensions by a factor of 2. 相比rgb表示来说，我们这次用了四个参数。 可以建立起一个三元一次等式，第三个可以通过其他两个计算出来。 在YCbCr空间中，只有Y和Cb、Cr值被传输和存储，而且Cb和Cr的分辨率可以比Y低，因为人类视觉系统对于亮度更加敏感。 JPG to YUV, BMP to YUV, EPS to YUV, GIF to YUV, ICO to YUV, PNG to YUV, PDF to YUV, PSD to YUV, TIFF to YUV, PS to YUV, PICT to YUV, AVS to YUV, YUV to YUV, FITS to YUV, SGI to YUV, CIN to YUV, MIFF to YUV, OTB to YUV, PALM to YUV, PCD to YUV, PCDS to YUV, PNM to YUV, PBM to YUV, PGM to YUV, PPM to YUV, DPX to YUV, TGA to YUV, RLE to YUV, XBM to YUV, XPM to YUV, P7 to YUV, DCX to YUV, PCX to ... The conversion from RGB to YUV looks something like this: Y = 0.299 x R + 0.587 x G + 0.114 x B U = -0.147 x R – 0.289 x G + 0.436 x B V = 0.615 x R – 0.515 x G – 0.100 x B. The reason why I wrote “something” is because there are a lot of different versions for converting RGB to YUV. The above are the correct values for NTSC. Difference between MJPG and YUV formats?. Learn more about image processing, image analysis, image segmentation, image acquisition, color space Image Acquisition Toolbox, Image Processing Toolbox