yuv

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How do I downsize a YUV420SP (NV21) frame retrieved from Android camera?

I am currently working on an Android application that processes camera frames retrieved from Camera.PreviewCallback.onPreviewFrame(). These frames are encoded in YUV420SP format and provided as a byte[详细]

2023-03-29 06:47 分类：问答
Should CbCr values for LibJPEG be signed or unsigned

I have a a SoC camera module which outputs YCbCr data in the following ranges: Y (0 -> 255) Cb and Cr (-127 -> 127)[详细]

2023-03-27 04:04 分类：问答
Can someone explain the `strides` parameter of YuvImage?

I\'m trying to read a byte array into a YuvImage, but am having trouble understandi开发者_如何学Pythonng what the strides parameter means. Can anyone help (preferably with an example?) Thanks.Here is[详细]

2023-03-21 00:04 分类：问答
DirectShow RGB-YUV filter

I would like to encode video in my app with VP8. I use RGB24 format in my app but VP8 DirectShow filter accepts only YUV format (http://www.webmproj开发者_StackOverflowect.org/tools/#directshow_filter[详细]

2023-03-19 16:25 分类：问答
transparency implementation in YUV422 using only Y

Lets say we have 2 images in YUV422 format and assume that the second image Y field of value 0x10 is being transparent and merged on to the first one with Cb and Cr overwritten.[详细]

2023-03-19 12:31 分类：问答
YUV420 to RGB conversion

I converted an RGB matrix to YUV matrix using this formula: Y=(0.257 * R) + (0.504 * G) + (0.098 * B) + 16[详细]

2023-03-16 19:16 分类：问答
Android YuvImage class format incorrect?

It\'s well documented that Android\'s camera preview data is returned back in NV21 (YUV 420).2.2 added a YuvImage class for decoding the data.The problem I\'ve encountered is that the YuvImage class d[详细]

2023-03-15 19:29 分类：问答
Convert YUV webcam image to java byte array

In 开发者_如何学PythonJava, what is the most efficient way of converting a frame of PC webcam image data in YUV (I420 or YUY2) format to a byte (or integer) array?Don\'t know about java, but this is h[详细]

2023-03-12 03:06 分类：问答
YUV color space and chrominance

Ok. To be short suppose: I have a monochrome image; And initially it represented in RGB color space. I don\'t know in what sequence I shall do this, but I need to conv开发者_高级运维ert image to YUV[详细]

2023-03-07 15:47 分类：问答
python PIL YCbCr support

Trying to create an PIL image in YCbCr mode crashes even a fresh python/PIL installation from synaptic in my ubuntu 11.04[详细]

2023-03-07 05:33 分类：问答