Image Downsampling Circuit with Colorless Detector
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Solution Overview
Problem
Conventional image downsampling techniques often result in line-broken and color fringing artifacts, as well as loss of sharpness during the image processing of image frames.
Innovation Solution
An image downsampling apparatus and method that incorporates a one-dimensional downsampling circuit and a multi-dimensional downsampling circuit, along with an output circuit, which perform downsampling using original image signals to produce adjusted image signals with reduced resolution, while a colorless detector determines the selection of subpixels based on detection results to mitigate artifacts and sharpness loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If conventional image downsampling technique is used, then resolution is reduced, but line-broken and color fringing artifacts occur
Solution Approach 1:
The patent segments the downsampling process into two independent circuits: one-dimensional downsampling circuit and multi-dimensional downsampling circuit. Each circuit processes the image signal in different dimensional directions, allowing the system to reduce resolution while maintaining image quality by distributing the downsampling operation across multiple specialized processing paths rather than a single conventional method.
2Area of stationary object
If conventional image downsampling technique is used, then resolution is reduced, but sharpness is lost
Solution Approach 1:
The patent introduces multi-dimensional downsampling by adding a multi-dimensional downsampling circuit that operates in additional spatial dimensions beyond the conventional single direction. This dimensional expansion allows the system to preserve sharpness information that would otherwise be lost in traditional one-directional downsampling, maintaining image clarity while achieving resolution reduction.
3Object-generated harmful factors
If colorless detection is performed to select subpixels, then artifact mitigation is achieved, but device complexity increases
Solution Approach 1:
The patent introduces a colorless detector as an intermediary component that analyzes the original image signal and provides control signals to the downsampling circuits. This mediator determines which subpixels should be selected for downsampling based on color information, enabling artifact mitigation through intelligent subpixel selection while keeping the overall system architecture manageable through modular design.
Data Source
AI summary
An image downsampling apparatus and an image downsampling method are provided. The image downsampling apparatus includes a one-directional downsampling circuit, a multi-directional downsampling circuit and an output circuit. The one-directional downsampling performs one-directional downsampling by using an original image signal to obtain and output a first adjusted image signal. The multi-directional downsampling circuit performs multi-directional downsampling by using the original image signal to obtain and output a second adjusted image signal. The output circuit outputs a downsampled image signal according to the first adjusted image signal and the second adjusted image signal.