Image Processing System Lens Position Correction for High Resolution
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Solution Overview
Problem
Current image processing systems face challenges in achieving high-resolution images due to limitations in lens positioning and pixel value differences, which affect image quality and focus accuracy.
Innovation Solution
An image processing system that includes a lens, an image sensor, and an image processor, where the system performs a preliminary operation to generate position correction information based on pixel value differences and adjusts the lens position to maximize phase differences between pixels, enabling high-resolution image restoration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the lens position is fixed at the in-focus position, then the image is clear and focused, but the phase difference between pixels is insufficient for high-resolution restoration
Solution Approach 1:
The system performs a preliminary lens sweep operation before actual image capture to detect the in-focus position and calculate position correction information. This preliminary action stores the relationship between lens position and phase difference, enabling the lens to be positioned optimally during actual capture without requiring complex real-time adjustments.
Solution Approach 2:
The lens position is made dynamic and adjustable rather than fixed. The system calculates correction information based on the in-focus position and actual lens position, then applies dynamic position adjustment to achieve optimal phase difference for high-resolution restoration while maintaining focus accuracy.
2Manufacturing precision
If the lens position is adjusted to maximize phase difference, then image resolution is improved, but focus accuracy may be compromised
Solution Approach 1:
The system uses feedback from the in-focus position detection to calculate position correction information. By comparing the in-focus position with the actual lens position and using this feedback to determine correction amounts, the system achieves optimal phase difference while maintaining focus accuracy through precise control.
Solution Approach 2:
The system changes the lens position parameter dynamically based on calculated correction information. By adjusting the lens position from the in-focus position by a specific correction amount, the system optimizes the phase difference parameter for high-resolution restoration while ensuring the image remains focused.
3Measurement precision
If a lens sweep operation is performed to detect in-focus position, then position correction information is obtained, but processing time increases
Solution Approach 1:
The lens sweep operation and in-focus position detection are performed as a preliminary action before actual image capture. This allows the system to pre-calculate position correction information, so that during actual capture, the lens can be directly positioned at the optimal point without time-consuming real-time sweeping operations.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system effectively enhances image resolution by optimizing lens positioning, improving focus accuracy and image quality by identifying and adjusting for maximum phase differences between pixels.
Implementation Method 1
a lens configured to receive light and transmit the received light to a plurality of micro-lenses included in an image sensor
Implementation Method 2
a lens configured to receive light and transmit the received light to a plurality of micro-lenses included in an image sensor
Implementation Method 3
An image sensor is a device that captures an image by using a semiconductor that reacts to light
Data Source
AI summary
An image sensor according to the present disclosure includes a lens configured to receive light, a preliminary operation performer configured to generate position correction information based on a difference between first pixel values, the first pixel values corresponding to pixels of a first micro-lens for the light of a first image received through the lens, and a lens position controller configured to change a position of the lens for a second image on the basis of the position correction information.