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公开(公告)号:US08873884B2
公开(公告)日:2014-10-28
申请号:US12898755
申请日:2010-10-06
CPC分类号: G06T3/4084
摘要: There is disclosed a method and system for resizing a digital image wherein a RGB image is converted into an YCbCr image (Y, Cb, Cr planes). Thereafter, a discrete cosine transform (DCT), followed by a specific inverse cosine transform (IDCT) is performed on each row/column of the Y, Cb, Cr planes. The mentioned specific operation corresponds to a type of homothetic matrix, which dimensions are defined by a scaling factor. In order to produce a scaled image, the scaled Y, Cb, Cr images are transformed to an RGB image for display.
摘要翻译: 公开了一种用于调整数字图像大小的方法和系统,其中RGB图像被转换成YCbCr图像(Y,Cb,Cr平面)。 此后,在Y,Cb,Cr平面的每行/列上执行离散余弦变换(DCT),随后进行特定的反余弦变换(IDCT)。 所提及的具体操作对应于同型矩阵的类型,其尺寸由缩放因子定义。 为了产生缩放图像,将缩放的Y,Cb,Cr图像变换为RGB图像进行显示。
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公开(公告)号:US20120087582A1
公开(公告)日:2012-04-12
申请号:US12898755
申请日:2010-10-06
CPC分类号: G06T3/4084
摘要: There is disclosed a method and system for resizing a digital image wherein a RGB image is converted into an YCbCr image (Y, Cb, Cr planes). Thereafter, a discrete cosine transform (DCT), followed by a specific inverse cosine transform (IDCT) is performed on each row/column of the Y, Cb, Cr planes. The mentioned specific operation corresponds to a type of homothetic matrix, which dimensions are defined by a scaling factor. In order to produce a scaled image, the scaled Y, Cb, Cr images are transformed to an RGB image for display.
摘要翻译: 公开了一种用于调整数字图像大小的方法和系统,其中RGB图像被转换成YCbCr图像(Y,Cb,Cr平面)。 此后,在Y,Cb,Cr平面的每行/列上执行离散余弦变换(DCT),随后进行特定的反余弦变换(IDCT)。 所提及的具体操作对应于同型矩阵的类型,其尺寸由缩放因子定义。 为了产生缩放图像,将缩放的Y,Cb,Cr图像变换为RGB图像进行显示。
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