Operating method used for interpolating calculation of H.264 luminance
An operation method and brightness technology, applied in the field of H.264 brightness interpolation calculation, can solve the problems of increased computational complexity and calculation amount, and achieve the effect of speeding up the encoding and decoding speed and improving the calculation speed of brightness interpolation
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Embodiment 1
[0060] see figure 1 with figure 2 , the operation method for H.264 luminance interpolation calculation of the present invention is used to calculate the line interpolation between pixels (ie integer pixels, such as pixels E, F, G, H, I, J, K, etc.) Point (that is, the brightness value of each fractional pixel point, such as interpolation point a, b, c, etc.). Wherein, the luminance value of each pixel is represented by 8 bits, for example, it can be stored in the lower 8 bits of a 32-bit data, and the upper 24 bits of the 32-bit data are equal to 0.
[0061] In the first step, the luminance values of consecutive pixels in a row direction, such as pixels E, F, G, H, I, J, K, are combined in pairs to form unsigned data with 32 bits each, wherein each 32-bit In the unsigned data, the luminance value of the pixel at the rear along the row direction occupies the 17th to 24th bits, and the luminance value of the pixel at the front occupies the 1st to 8th bits. Such as figure ...
Embodiment 2
[0084] See image 3 , the operation method for H.264 luminance interpolation calculation of the present invention can also be used to calculate the luminance value of a column interpolation point between pixel points. details as follows:
[0085] Firstly, combine the luminance value of each pixel point in one column of two adjacent columns with the luminance value of the pixel point in the same row in the other column to form unsigned data of 32 bits each, wherein, in each In the 32-bit unsigned data, the luminance value of the pixel at the rear along the row direction occupies the 17th to 24th bits, and the luminance value of the pixel at the front occupies the 1st to 8th bits. For example, if figure 1 As shown, 2 columns of 6 vertical continuous integer pixels {A, C, G, N, T, V} and {B, D, H, P, U, W} are combined into 6 32-bit unsigned data {[A`], [C`], [G`], [N`], [T`], [V`]}, where, unsigned data [A`], pixel The brightness value of point A occupies the 1st to 8th bits...
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