Image Processing Apparatus for Uneven Surface Color Reproduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing image processing techniques struggle to accurately reproduce the color and surface topography of uneven objects, leading to reduced color gamut and undesired surface shapes due to ink flow issues on uneven surfaces.
Innovation Solution
An image processing apparatus determines specific recording amounts for both shape and color by acquiring color and shape data, performing frequency analysis, and using a lookup table to calculate the necessary ink amounts for forming a color material layer that reflects the object's surface topography and color, ensuring accurate reproduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If ink is used to form a color material layer on an uneven layer, then color information can be reproduced, but ink may flow on the uneven layer causing loss of surface shape fidelity
Solution Approach 1:
The patent applies different recording amounts of ink at different positions on the uneven layer based on local surface characteristics. By analyzing the surface shape data and calculating position-dependent recording amounts, the system optimizes ink application locally to prevent flow while maintaining color reproduction quality in each specific region.
Solution Approach 2:
The patent changes the recording amount parameter of ink based on the surface shape characteristics. By calculating the relationship between surface unevenness and optimal ink quantity, the system adjusts ink recording amounts dynamically to match local surface conditions, preventing ink flow on steep portions while ensuring adequate color coverage on flatter areas.
2Loss of information
If ink recording amount is increased to improve color reproduction on uneven surfaces, then color gamut is improved, but surface shape control deteriorates due to ink flow
Solution Approach 1:
The system determines position-specific recording amounts that locally optimize both color gamut and surface shape control. By evaluating surface characteristics at each position and calculating appropriate ink quantities individually, the method achieves high color reproduction where needed while maintaining surface integrity in flow-prone areas.
Solution Approach 2:
The patent uses measured surface shape data as feedback to calculate optimal recording amounts. By analyzing the actual surface characteristics and using this information to determine ink application parameters, the system creates a closed-loop approach that balances color reproduction requirements with surface shape preservation.
3Loss of information
If conventional gamut mapping is used for uneven surfaces, then color reproduction is attempted, but desired surface shape cannot be obtained due to ink flow characteristics
Solution Approach 1:
The patent extends conventional gamut mapping by incorporating surface shape parameters into the color conversion process. By calculating recording amounts that account for both colorimetric requirements and surface topology, the system modifies the traditional approach to simultaneously optimize color reproduction and surface shape fidelity.
Solution Approach 2:
The system combines color information data with surface shape data to create a composite processing approach. By integrating these two types of information and processing them together to determine recording parameters, the method achieves coordinated optimization of both color reproduction and surface shape control.
Data Source
AI summary
An image processing apparatus includes a first acquisition unit configured to acquire color data representing a color of a target object for each position thereon, a second acquisition unit configured to acquire shape characteristic data representing characteristics of a shape of the target object for each position thereon, and a determination unit configured to determine a first recording amount of a first recording material and a second recording amount of a second recording material based on the color data, the shape characteristic data, and any one of a measurement result, a function calculated based on the measurement result, and a table generated based on the function. The measurement result is obtained by measuring color and shape characteristics of a plurality of types of patches formed by recording the second recording material on the first recording material recorded on a recording medium.