Image Reading Apparatus Bayer Filter Resolution Memory
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Solution Overview
Problem
Conventional image reading apparatuses using area sensors generate high-resolution image data with poor definition and large memory requirements, leading to operational instability and inconvenience during image editing.
Innovation Solution
An image reading apparatus that performs first and second readings using a Bayer arrangement color filter, generating image data by combining values from adjacent pixels, allowing for selection between different resolution data sets to improve image quality and reduce memory usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If high-resolution image data is generated using conventional weighted average method, then image resolution is improved, but image definition deteriorates
Solution Approach 1:
The patent segments the image processing into two distinct paths: one for generating high-resolution image data by combining multiple readings, and another for generating fine image data by selecting representative pixel values. This segmentation allows the system to provide different image types for different purposes without compromising either resolution or definition.
Solution Approach 2:
The patent applies different processing methods to different types of image data. For high-resolution image data, it uses weighted average of multiple readings. For fine image data, it selects representative pixel values (max, min, or average) from the Bayer arrangement pixels. This local quality approach ensures each image type has optimal characteristics for its intended use.
2Measurement precision
If high-resolution image data is generated, then image resolution is improved, but memory usage increases
Solution Approach 1:
The patent dynamically adjusts the image processing based on user selection. The system can switch between generating high-resolution image data (larger memory usage) and fine image data (smaller memory usage) depending on the intended application. This dynamic approach allows flexible memory management while maintaining the capability to produce high-resolution data when needed.
3Measurement precision
If high-resolution image data is generated, then image resolution is improved, but operational stability deteriorates
Solution Approach 1:
The system dynamically selects between high-resolution image data and fine image data based on user needs. For applications requiring high resolution, the system generates high-resolution data. For applications where stability is more important (such as image editing), the system generates fine image data with smaller file size, thereby improving operational stability and responsiveness.
4Measurement precision
If high-resolution image data is generated, then image resolution is improved, but ease of operation deteriorates
Solution Approach 1:
The patent enables dynamic selection between high-resolution image data and fine image data based on the intended operation. For image editing tasks, the system can generate fine image data with smaller file sizes that are more manageable and easier to operate with. For viewing or archival purposes requiring high resolution, the system generates high-resolution data. This dynamic adaptability improves ease of operation for different use cases.
Data Source
AI summary
An image reading apparatus includes: a reader that performs first reading of reading a document and second reading of reading a portion read through a first color in the first reading through a second color using an area sensor having a Bayer arrangement color filter; a generator that generates first image data represented by a plurality of adjacent pixels with a read value obtained through one Bayer arrangement in the first reading as one pixel, and generates second image data using, for each reading position, a value read through the first color in the first reading and a value read through the second color in the second reading; and a selector that selects one of the first image data or the second image data.