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首页> 外文期刊>IEEE Transactions on Image Processing >Color to gray and back: color embedding into textured gray images
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Color to gray and back: color embedding into textured gray images

机译：颜色为灰色，背面为灰色：将颜色嵌入带纹理的灰色图像中

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摘要

We have developed a reversible method to convert color graphics and pictures to gray images. The method is based on mapping colors to low-visibility high-frequency textures that are applied onto the gray image. After receiving a monochrome textured image, the decoder can identify the textures and recover the color information. More specifically, the image is textured by carrying a subband (wavelet) transform and replacing bandpass subbands by the chrominance signals. The low-pass subband is the same as that of the luminance signal. The decoder performs a wavelet transform on the received gray image and recovers the chrominance channels. The intent is to print color images with black and white printers and to be able to recover the color information afterwards. Registration problems are discussed and examples are presented.
机译：我们已经开发了一种可逆的方法，可以将彩色图形和图片转换为灰色图像。该方法基于将颜色映射到应用于灰色图像的低可见性高频纹理。在接收到单色纹理图像之后，解码器可以识别纹理并恢复颜色信息。更具体地，通过进行子带（小波）变换并且用色度信号代替带通子带来对图像进行纹理化。低通子带与亮度信号的子带相同。解码器对接收到的灰度图像执行小波变换，并恢复色度通道。目的是使用黑白打印机打印彩色图像，然后能够恢复彩色信息。讨论注册问题并提供示例。

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