Patent
Image-coding method
Masahiro Kawarada,昌大 瓦田 +1 more
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TLDR
In this paper, an image-coding method which outputs image data and an alpha channel in a single file form for compressing and coding an image and the alpha channel accompanying therewith, without converting the resolution for further taking out reduced image data of low resolutions therefrom lower than a fixed value is proposed.Abstract:
PROBLEM TO BE SOLVED: To provide an image-coding method which outputs image data and an alpha channel in a single file form for compressing and coding an image and the alpha channel accompanying therewith, and takes out an alpha channel corresponding to a reduced image, without converting the resolution for further taking out reduced image data of low resolutions therefrom lower than a fixed value SOLUTION: The image coding method of compressing and coding input image data, composed of a plurality of components comprises a step of adding an alpha channel having mask information recorded per pixel for forming a composite image to the input image data as a new component, coding image data, containing a plurality of components and the new component after converting the resolutions thereof in an hierarchical form, thereby forming an integrated image file COPYRIGHT: (C)2005,JPO&NCIPIread more
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