Image Processing Device Sampling Position Adjustment
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Solution Overview
Problem
Image processing devices face challenges in reducing the bokeh phenomenon when synthesizing images from pixel arrays with pixels of different sensitivities, leading to interpolation issues and suboptimal image quality.
Innovation Solution
An image processing device is designed to calculate and adjust sampling positions of pixels with varying sensitivities, determining a reference position to synthesize images effectively, thereby reducing the bokeh phenomenon by interpolating pixel values from high-sensitivity, middle-sensitivity, and low-sensitivity pixels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If pixels with different sensitivities are used in the pixel array, then the dynamic range and image quality are improved, but the bokeh phenomenon occurs during image synthesis
Solution Approach 1:
The patent applies local quality by determining a reference position based on the sampling positions of pixels with different sensitivities, and then adjusting the sampling positions of high-sensitivity pixels relative to this reference. This creates localized position corrections for different pixel types, allowing each pixel to contribute optimally to the synthesis while minimizing the bokeh effect in specific regions of the pixel array.
Solution Approach 2:
The patent changes the sampling position parameter of pixels based on their sensitivity characteristics. By calculating adjusted sampling positions for high-sensitivity pixels relative to a reference position determined from other pixels, the system modifies the spatial parameter of pixel sampling to compensate for sensitivity variations, thereby reducing the bokeh phenomenon during image synthesis.
2Productivity
If sampling positions of pixels with different sensitivities are not adjusted, then the image synthesis process is simple, but the bokeh phenomenon increases and image quality deteriorates
Solution Approach 1:
The patent applies preliminary action by pre-calculating the sampling positions of pixels with different sensitivities and determining a reference position before the actual image synthesis process. This preliminary position adjustment is performed in advance, allowing the synthesis process to proceed efficiently without requiring complex real-time calculations, thus maintaining productivity while improving image quality.
3Object-affected harmful factors
If a reference position is determined based on sampling positions, then the bokeh phenomenon is reduced, but the processing complexity increases
Solution Approach 1:
The patent uses an intermediary approach by introducing a reference position as a mediator between the sampling positions of different pixels. The reference position serves as an intermediate calculation that simplifies the overall processing complexity, as it provides a common baseline from which adjusted sampling positions can be derived systematically, reducing the bokeh effect without requiring overly complex processing algorithms.
Data Source
AI summary
An image processing device is disclosed. The image processing device includes at least one first pixel having a first sensitivity, a second pixel having a second sensitivity different from the first sensitivity, a processor, and a synthesizer. The processor calculates a sampling position of the at least one first pixel and a sampling position of the second pixel, determines a reference position and adjusts the sampling position of the at least one first pixel or the second pixel based on the reference position.