Image forming apparatus and control method of the same
AssigneesKabushiki Kaisha Toshiba, Toshiba Tec Kabushiki Kaisha
InventorKeita Umeda
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Abstract
According to one embodiment of the invention, an image processor generates a median filter circuit and median-filters input image data.
Claims10
An image forming apparatus comprising:
- an image processor which can selectively generate a median filter circuit median-filtering input image data, a low-resolution conversion circuit converting the resolution of the image data median-filtered by the median filter circuit into a low resolution, and an edge detecting circuit detecting an edge of a character image area in the image data processed by the low-resolution conversion circuit;
- and
- a controller which generates the median filter circuit and starts its process, generates the low-resolution conversion circuit and starts its process after the process of the median filter circuit is ended, generates the edge detecting circuit and starts its process after the process of the low-resolution conversion circuit is ended, separates the image data processed by the edge detecting circuit into character image data and background image data by analyzing the layout of the character image area in the image data processed by the edge detecting circuit after the process of the edge detecting circuit is ended, compresses the separated character image data and the separated background image data, and files the compressed character image data and the compressed background image data into a file.
A control method of an image forming apparatus having an image processor which can selectively generate a median filter circuit median-filtering input image data, a low-resolution conversion circuit converting the resolution of the image data median-filtered by the median filter circuit into a low resolution, and an edge detecting circuit detecting an edge of a character image area in the image data processed by the low-resolution conversion circuit, the method comprising:
- generating the median filter circuit and starting its process;
- generating the low-resolution conversion circuit and starting its process after the process of the median filter circuit is ended;
- generating the edge detecting circuit and starting its process after the process of the low-resolution conversion circuit is ended;
- separating the image data processed by the edge detecting circuit into character image data and background image data by analyzing the layout of the character image area in the image data processed by the edge detecting circuit after the process of the edge detecting circuit is ended;
- compressing the separated character image data and the separated background image data;
- and
- filing the compressed character image data and the compressed background image data into a file.
Dependencies are inferred from the claim text.