Image Processing Apparatus Asymmetric Resolution Glossiness
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Solution Overview
Problem
Current image processing systems require storing a double amount of image data to display images reproducing glossiness, as they need to store two pieces of image data with the same resolution for regular and diffused reflection light images obtained from different angles, leading to increased storage requirements.
Innovation Solution
An image processing apparatus that controls the reading unit to radiate light to a target from two directions with different angles, where the resolution of the regular reflection light image is set lower than the diffused reflection light image, reducing the overall image data storage needs by using methods such as varying reading speeds or decimating pixel values.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If two pieces of image data with the same resolution are obtained by radiating light from two directions, then the quality of the composite image reproducing glossiness is improved, but the amount of image data required to be stored increases
Solution Approach 1:
The patent applies local quality by assigning different resolutions to different types of image data. Specifically, diffused reflection light image data is captured at high resolution to preserve texture details, while regular reflection light image data is captured at low resolution since it primarily contains glossiness information. This differentiated approach maintains overall image quality while reducing total data storage requirements.
Solution Approach 2:
The patent changes the resolution parameter differently for different types of image data based on their functional requirements. By adjusting the resolution parameter selectively - high for diffused reflection (texture-critical) and low for regular reflection (glossiness-critical) - the system optimizes the balance between image quality and data quantity.
2Loss of information
If the reading unit reads images at high resolution from both directions, then the detail information is preserved, but the storage capacity requirement doubles
Solution Approach 1:
The patent preserves detail information selectively by applying high resolution only where needed - specifically for diffused reflection light image data that contains texture information. For regular reflection light image data that primarily contains glossiness information, lower resolution is sufficient, thus preserving essential details while avoiding redundant data storage.
3Measurement precision
If two scanning operations are performed with the same resolution settings, then consistent image quality is achieved, but the storage requirement increases by 100%
Solution Approach 1:
The patent changes resolution parameters based on the specific requirements of each scanning operation. The first scanning operation (diffused reflection) uses high resolution to capture texture details, while the second scanning operation (regular reflection) uses low resolution for glossiness information. This parameter differentiation maintains image quality consistency for each type while significantly reducing total storage requirements from 200% to 62.5% of the original.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach reduces the total amount of image data required to be stored by 37.5% while maintaining the quality of the composite image, allowing for efficient storage and display of images reproducing glossiness without significant visual degradation.
Implementation Method 1
scanning based on diffused reflection light and scanning based on regular reflection light
Data Source
AI summary
An image processing apparatus includes a reading unit and a controller. The reading unit radiates light to a target from two directions with different angles and reads images of the target. The controller performs, when controlling the reading unit to acquire the two images of the target, control such that a resolution of the image read by radiating the light to the target from one of the two directions is lower than a resolution of the image read by radiating the light to the target from the other one of the two directions.