Image Processing Apparatus Gradation Correction Storage Control
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Solution Overview
Problem
Current image processing systems experience delays in initiating the output process due to the need to store and transmit multi-value image data for gradation correction, which is time-consuming, especially when using general-purpose computers for image processing.
Innovation Solution
An image processing apparatus that includes a gradation correction section for output gradation correction, a conversion section to convert multi-value data into binary data, and a control section that stores image data in either multi-value or binary format based on the content's requirement for gradation correction, reducing the time from instruction to output by performing gradation correction and conversion before transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If multi-value image data is stored and transmitted for gradation correction, then output quality is improved, but processing time increases
Solution Approach 1:
The patent performs gradation correction and binary conversion in advance during the image input stage, so that when output is requested, the corrected binary image data is already available in storage. This eliminates the need to perform time-consuming gradation correction at output time, thus resolving the contradiction between maintaining output quality and reducing processing time.
2Measurement precision
If gradation correction is performed on all image data, then output accuracy is improved, but processing complexity increases
Solution Approach 1:
The patent applies gradation correction selectively based on image content analysis. It identifies whether the input image contains continuous tone images requiring gradation correction or binary images not requiring correction, and processes accordingly. This localized approach maintains output accuracy for images that need it while reducing processing complexity for images that don't require extensive correction.
Data Source
AI summary
An image processing apparatus includes: a gradation correction section that performs output gradation correction with respect to input multi-value image data; a conversion section that converts the multi-value image data, which is acquired after the output gradation correction is performed by the gradation correction section, into binary image data; a storage section that stores the multi-value image data or the binary image data; and a control section that performs control such that the multi-value image data, which is acquired before the output gradation correction is performed, is stored in the storage section in a case where content of the input image data is content which requires the output gradation correction, and such that the binary image data is stored in the storage section in a case where the content of the input image data is content which does not require the output gradation correction.