例句與造句

1. 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(zhuǎn)換到y(tǒng)cbcr顏色空間，然后提取亮度通道y ，將其進(jìn)行小波變換，然后利用人眼視覺模型對(duì)載體圖象分解后的小波系數(shù)進(jìn)行分類。其次，對(duì)有意義的水印圖像分別進(jìn)行3次不同的魔方置亂，得到3個(gè)隨機(jī)水印序列。
2. It's difficult to find background luminance in a sentence. 用background luminance造句挺難的