Ink Deposition Curve Computation via Histogram Analysis
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Solution Overview
Problem
Conventional methods for determining an ink deposition curve in printing systems are compute-intensive and require detailed knowledge of halftone design, making them inefficient.
Innovation Solution
A method that computes ink deposition curve data by receiving histograms and ink measurement data for each color plane, using an ink model to estimate ink usage, and transmitting the ink deposition curve data for improved printer performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional halftoning-based methods are used to determine ink deposition curve, then detailed halftone design knowledge is utilized, but computational complexity increases significantly
Solution Approach 1:
The patent extracts the essential relationship between gray levels and ink deposition by directly measuring ink amount at each gray level without requiring the complex halftoning process. This isolates the core measurement need from the computationally intensive halftoning operations, achieving accurate ink deposition curves with simplified computation.
Solution Approach 2:
Instead of using halftoning to generate patterns and then measuring ink deposition, the patent inverts the approach by directly measuring ink deposition at different gray levels and using this data to compute the ink deposition curve. This reversal eliminates the need for halftone design knowledge and reduces computational complexity.
2Measurement precision
If halftoning operation is performed to determine ink deposition curve, then ink usage can be measured, but processing time increases
Solution Approach 1:
The patent performs preliminary direct measurements of ink deposition at various gray levels to establish the ink deposition curve before actual printing operations. This pre-computation approach eliminates the need to perform time-consuming halftoning operations during production, significantly reducing processing time while maintaining measurement accuracy.
3Measurement precision
If detailed halftone design knowledge is required, then accurate ink deposition can be achieved, but system complexity increases
Solution Approach 1:
The patent enables the system to self-determine the ink deposition curve through direct measurement and computation without requiring external halftone design expertise. The system automatically correlates gray levels with ink deposition amounts, making the process independent of specialized halftone design knowledge while maintaining accuracy.
Data Source
AI summary
A system is disclosed. The system at least one physical memory device to store ink deposition curve compute logic and one or more processors coupled with the at least one physical memory device, to execute the ink deposition curve compute logic to receive a histogram for each of a plurality of color planes, receive ink measurement data for each of the plurality of color planes, compute ink deposition curve data for each of the plurality of color planes based on the histograms and the ink measurement data and transmit the ink deposition curve data.