Multi-Camera Image Quality Consistency via Tuning Parameters
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Solution Overview
Problem
Electronic devices with multi-camera modules experience significant image quality differences when switching between wide-angle and telephoto cameras due to differences in scan locations, leading to an unpleasant user experience.
Innovation Solution
An electronic device that adjusts the tuning parameters for the wide-angle camera based on the location of the telephoto camera's view angle center, using a processor to apply specific tuning parameters to ensure consistent image quality during camera switching by controlling the orientation of the telephoto camera's view angle and storing these parameters in a lookup table.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the telephoto camera is used to scan external objects by rotating or moving the prism or mirror, then the telephoto camera can capture objects in different directions, but the center direction of the telephoto camera becomes different from the center direction of the wide-angle camera, causing significant image quality changes when switching between cameras
Solution Approach 1:
The processor pre-applies a second tuning parameter to the first image data from the wide-angle camera based on the detected location of the telephoto camera's view angle center. This preliminary adjustment ensures that when users switch between cameras, the image quality remains consistent without requiring physical repositioning of the wide-angle camera.
Solution Approach 2:
The patent applies different tuning parameters to different regions of the image. Specifically, a second tuning parameter is applied to the first image data in the region corresponding to the telephoto camera's view angle center location. This local adjustment compensates for the directional mismatch without affecting the entire image, thereby maintaining image quality consistency in the critical switching region.
2Ease of operation
If the wide-angle camera is switched to the telephoto camera when the external object is in a peripheral region, then the telephoto camera can focus on the peripheral object, but the quality level of the preview image changes greatly, providing a sense of difference to the user
Solution Approach 1:
Before the user actually switches cameras, the processor detects the telephoto camera's view angle center location and pre-adjusts the first image data by applying the second tuning parameter. This ensures that when the switch occurs, both cameras present images of consistent quality, eliminating the noticeable quality change that would otherwise occur during peripheral object capture.
Data Source
AI summary
An electronic device includes a first camera having a first view angle; a second camera having a second view angle that is smaller than the first view angle; a display; a memory; and a processor configured to: apply a first tuning parameter to first image data obtained by the first camera; recognize an external object; control, by driving the second camera, a center of the second view angle to be oriented toward the recognized external object; and apply, to the first image data, a second tuning parameter corresponding to a location of the center of the second view angle.