发明申请
US20140072240A1 METHOD AND APPARATUS FOR CONVERTING AN IMAGE, AND METHOD AND APPARATUS FOR INVERSE CONVERTING AN IMAGE 审中-公开
用于转换图像的方法和装置,以及用于逆变换图像的方法和装置

METHOD AND APPARATUS FOR CONVERTING AN IMAGE, AND METHOD AND APPARATUS FOR INVERSE CONVERTING AN IMAGE
摘要:
An image transformation method substitutes element based on a trigonometric function included in a discrete cosine transform (DCT) matrix with a rational number, performs upscaling and transformation process on an input signal using the substituted DCT matrix based on a maximum value of a denominator of an intermediate value generated in the transformation process, and performs downscaling on the transformed signal.
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