luminance channel 中文意思是什麼
luminance channel
解釋
亮波道-
This arithmetic divides the wavelet coefficients of carrier image into 27 - classes by the background luminance, the texture and the edge mask character of visual system ; then after encrypting watermark image with magic cube transformation, the ycbcr model is employed, it embeds the watermark sequences in the carrier image with different intensity according to the coefficients " classes of carrier image in y channel
首先，將載體rgb圖像轉換到ycbcr顏色空間，然後提取亮度通道y ，將其進行小波變換，然後利用人眼視覺模型對載體圖象分解后的小波系數進行分類。其次，對有意義的水印圖像分別進行3次不同的魔方置亂，得到3個隨機水印序列。 -
In improved uep scheme, the syntax elements belonged to luminance parts and chrominance parts was reassigned to different data partitions. those packets containing syntax elements belonged to luminance parts were got error protection at high level so as to guarantee their correctness during transmitting in error - prone network. simulation has shown that using proposed scheme, the packing tradeoff is decreased 8240 bytes in error - free channel and also the output bits and bit rate of coded video stream are decreased 2. 70kbits and 0. 33 kbps respectively
模擬實驗表明，本方案能在無噪通道中有效降低編碼器端8240位元組的打包開銷和2 . 70kbit的輸出比特數以及0 . 33kbps的比特率，而在有噪通道中可使解碼輸出重構視頻圖像的視覺質量得到一定程度的提高，亮度分量峰值信噪比可增加近1db 。 -
An algorithm of watermark is put forward. it embeds watermark via masking characteristic of human vision texture, luminance and blue channel. this algorithm ensured the invisibility of watermark and demonstrated better robustness in common image processing
4 、給出了一種利用人類視覺紋理、亮度和藍色通道掩蔽特性嵌入水印的演算法，該演算法在保證水印不可見性的同時，對常見的圖象處理表現出較好的魯捧性。 -
The visual quality of decoded video information is improved at some extent and psnr value of luminance parts is increased nearly 1 db in error - prone channel. 4. an adaptively rd - optimal coding algorithm was proposed to be aimed at the computing redundancy in h. 264 recommendation algorithm
針對h . 264標準率失真優化編碼演算法中存在的計算冗餘過大問題，提出了一種自適應率失真優化編碼演算法，將h . 264標準演算法中求解解碼重構視頻信息期望失真度的代數和平均演算法，改進為加權和平均演算法。
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