Image reducing device and method
AssigneeFuji Photo Film Co., Ltd.
InventorToshihiro Tanizawa
Life of this patent
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Abstract
An image reducing device comprises a simple-averaging device that calculates a simple average of data of pixels of each simple-averaging area of original image data to acquire a pixel of middle image data, and a weighted-averaging device that multiplies data of pixels of the middle image data that are adjacent to a pixel of reduced image data by weight coefficients according to positions of the pixel of the reduced image data and the pixels of the middle image data to acquire the pixel of the reduce image data. In this method, the weighted-averaging is performed after the number of pixels are reduced by the simple-averaging, and this can obtain the reduced image of high quality without overloading the software and hardware. In addition, the edging can be easily performed at the same time as the weighted-averaging.
Claims12
An image reducing device that converts image data of one original image into image data of a reduced image with less pixels, said image reducing device comprising:
- a simple-averaging device that calculates a simple average of image data of a plurality of pixels of each simple-averaging area of the image data of the one original image to acquire a plurality of pixels of image data of a single middle image of each simple-averaging area;
- and
- a weighted-averaging device that multiplies the image data of the plurality of pixels of the single middle image that are adjacent to a pixel of the image data of the reduced image by weight coefficients according to positions of the pixel of the image data of the reduced image and the image data of the plurality of pixels of the single middle image to acquire the image data of the reduced image.
An image reducing method of converting image data of one original image into image data of a reduced image with less pixels, said image reducing method comprising the steps of:
- calculating a simple average of image data of a plurality of pixels of each simple-averaging area of the image data of the one original image to acquire a plurality of pixels of image data of a single middle image;
- and
- multiplying the image data of the plurality of pixels of the single middle image that are adjacent to a pixel of the image data of the reduced image by weight coefficients according to positions of the pixel of the reduced image and the image data of the plurality of pixels of the middle image to acquire the image data of the reduce image.
Dependencies are inferred from the claim text.