JP2009060593A5

JP2009060593A5 -

Info

Publication number: JP2009060593A5
Application number: JP2008187914A
Authority: JP
Filing date: 2008-07-18
Publication date: 2011-08-04
Anticipated expiration: 2028-07-18

Claims

A plurality of sensors that read a document image are arranged in a line, an image reading device including an image sensor that reads the document image line by line and outputs image data for each sensor,
Among the image data of the original image output from each of the plurality of sensors, the image data of one end side pixel read by each of the plurality of sensors is different from the image data of the other remaining pixels of the pixel. A compression means for compressing by a compression method;
Storage means for storing the image data compressed by the compression means;
Decompression means for decompressing the image data output from the storage means;
Counting means for counting the number of pixels input to the expansion means;
Determination means for determining the number of pixels used for reading for each of the plurality of sensors ,
The decompression means comprises a number of pixels that have been counted by the counting means, wherein based on the more the determined number of pixels to the determining means, the image reading apparatus characterized by changing the decompression method of the image data.

The image processing apparatus further includes a control unit that reads out image data for each of the plurality of sensors stored in the storage unit in an order corresponding to an arrangement order of pixels for one line of the document image and serially inputs the data to the compression unit. The image reading apparatus according to claim 1, wherein the image reading apparatus is an image reading apparatus.

The compression means compresses image data of one end side of each of the plurality of sensors based on the image data of the pixel, and image data of the remaining pixel is based on image data of an adjacent pixel that is read first. the image reading apparatus according to claim 1 or 2, characterized in that compressed Te.

The number of pixels more are determined to the determining means includes an image reading apparatus according to any one of claims 1 to 3, characterized in that the number of pixels each of the plurality of sensors.

The expansion means expands the image data of the pixel on one end side of each of the plurality of sensors based on the image data of the pixel, and the image data of the remaining pixel is based on the image data of the adjacent pixel that is read first. the image reading apparatus according to claim 1, any one of 4, characterized in that stretching Te.

A plurality of sensors for reading an original image is arranged in a line, a 1 line by reading the document image, an image reading using an image reading apparatus having an image sensor for outputting image data for each of the sensor method,
Among the image data of the original image output from each of the plurality of sensors, the image data of one end side pixel read by each of the plurality of sensors is different from the image data of the other remaining pixels of the pixel. A compression step of compressing by a compression method;
A storage step of storing the image data compressed by the compression step in a storage means;
Decompressing the image data output from the storage means by decompression means;
A counting step of counting the number of pixels input to the expansion means by a counting means;
And characterized in that it has a number of pixels used for reading each of the plurality of sensors, on the basis of the counted number of pixels in the counting step, and a step of changing the decompression method of the image data by the decompression means Image reading method.