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PROCEDURE FOR MODIFICATION OF FIGURES IN DISCRITED CONSUMER TRANSFORMATION
PROCEDURE FOR MODIFICATION OF FIGURES IN DISCRITED CONSUMER TRANSFORMATION
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机译:离散消费者转换中的数字修改程序
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摘要
A method for resizing an original image using the inverse discrete cosine transform (IDCT), wherein the original image is divided into image blocks and each of the image blocks is discrete cosine transformed, comprises the steps of: (a) receiving discrete cosine transformed image blocks of size M x N from a digital broadcast or a data stream reproduced from a storage medium; (b) determining the size P x Q to which each of the discrete cosine transformed image blocks is to be enlarged and appending rows and columns of zeros to the high frequency area of each of the discrete cosine transformed image blocks so that the size of each of the discrete cosine transformed image blocks becomes the determined size P x Q; (c) computing a k-coefficient for the zero-appended discrete cosine transformed image blocks and multiplying each of the zero-appended discrete cosine transformed image blocks by the k-coefficient; (d) performing inverse discrete cosine transform (IDCT) operations on the zero-appended discrete cosine transformed image blocks multiplied by the k-coefficient to produce enlarged image blocks of size P x Q; and (e) producing an enlarged image by combining the enlarged image blocks of size P x Q, wherein the number of rows of each of the image blocks is determined by choosing a common divisor of the numbers of rows of the original image and an enlarged image to be produced and dividing the number of rows of the original image by the chosen common divisor and the number of columns of each of the image blocks is deter-mined by choosing a common divisor of the numbers of columns of the original image and the enlarged image and dividing the number of columns of the original image by the chosen common divisor.
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机译:一种使用逆离散余弦逆变换(IDCT)调整原始图像大小的方法,其中原始图像被划分为图像块,并且每个图像块都经过离散余弦变换,包括以下步骤:(a)接收离散余弦变换后的图像来自存储介质中再现的数字广播或数据流的大小为M x N的块; (b)确定每个离散余弦变换图像块要放大到的大小P x Q并将零的行和列附加到每个离散余弦变换图像块的高频区域,以使每个大小离散余弦变换后的图像块的像素变为确定的大小P x Q; (c)计算零附加离散余弦变换图像块的k系数,并将每个零附加离散余弦变换图像块乘以k系数; (d)对零附加的离散余弦变换的图像块乘以k系数进行逆离散余弦变换(IDCT)操作,以产生大小为P×Q的放大图像块; (e)通过组合尺寸为P×Q的放大图像块来产生放大图像,其中,每个图像块的行数是通过选择原始图像的行数和放大后的图像的公共除数来确定的。通过选择原始图像和行数的公共除数来确定要生成的图像,然后将原始图像的行数除以所选的公共除数,然后确定每个图像块的列数。放大图像,然后将原始图像的列数除以所选的公共除数。
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