Image Processing Apparatus Paper White Correction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing image forming systems struggle to accurately evaluate test images formed on non-standard recording media, as the evaluation target values are determined based on standard media characteristics, leading to inaccurate assessments when the test images are printed on different paper types.
Innovation Solution
An information processing apparatus and system that acquires characteristics of test images and paper white regions, compares them to target values, and corrects these values based on the differences between the paper white characteristics of the non-standard and standard media, ensuring accurate evaluation even when test images are formed on non-standard paper.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If target values are determined based on standard recording medium characteristics, then evaluation is simplified and consistent, but evaluation accuracy deteriorates when test images are formed on non-standard recording media
Solution Approach 1:
The system performs preliminary measurement of the paper white region characteristics before evaluating the test image. By acquiring the paper white characteristic in advance and using it to correct the target value, the system prepares the appropriate evaluation criteria beforehand, ensuring accurate evaluation for the specific recording medium being used.
Solution Approach 2:
The system dynamically adjusts the target value parameter based on the measured paper white characteristic. Instead of using a fixed target value, the system modifies the target value by adding the difference between the actual paper white characteristic and the reference paper white characteristic, thereby adapting the evaluation criteria to match the specific recording medium.
2Measurement precision
If target values are corrected based on paper white characteristic measurements, then evaluation accuracy for non-standard media improves, but measurement and processing time increase
Solution Approach 1:
The system extracts only the necessary paper white region from the recording medium for measurement, separating this preliminary measurement step from the main test image evaluation process. By focusing measurement efforts only on the paper white region rather than the entire recording medium, the system minimizes additional measurement time while still achieving accurate evaluation.
3Reliability
If fixed target values are used for all recording media, then the evaluation system remains simple and consistent, but diagnostic reliability deteriorates when evaluating test images on different paper types
Solution Approach 1:
The evaluation system transitions from a static, fixed target value approach to a dynamic system that automatically adapts target values based on the measured paper white characteristic. This dynamic adjustment mechanism allows the system to maintain high diagnostic reliability across different recording media types while keeping the adaptation process automated and integrated into the existing evaluation workflow.
Data Source
AI summary
An information processing apparatus includes a processor configured to acquire information regarding characteristics of a test image on a recording medium, which is formed under a predetermined image forming condition by an image forming section, and a paper white region of the recording medium, in which the test image is not formed, output a comparison result obtained by comparing the characteristic of the test image formed on the recording medium to a target value corresponding to a characteristic in a case where the test image is formed on a predetermined standard recording medium under the image forming condition, and correct the target value based on a difference between a paper white characteristic and a reference characteristic, the paper white characteristic being a characteristic of the paper white region of the recording medium, and the reference characteristic being a characteristic of the standard recording medium on which an image is not formed.