Panoramic Image Correction Using Depth Mapping
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Solution Overview
Problem
Current panoramic photographing methods suffer from significant distortion due to large viewing angles, which affects the aesthetic quality of panoramic images, as the camera's small viewing angle and lens distortion lead to inconsistent image splicing and edge distortions, lacking effective solutions in the related art.
Innovation Solution
A method and device for panoramic photographing that acquire depth information of objects using a ranging device and apply pre-set mapping relationships to calculate offsets, correcting the panoramic image by shifting pixel positions to address distortion, thereby ensuring precise and efficient correction of panoramic images.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If panoramic photographing with large viewing angle is used to capture wide scenes, then the viewing angle coverage is improved, but image distortion increases
Solution Approach 1:
The patent applies preliminary action by pre-calculating and storing correction parameters in a correction parameter table before panoramic image generation. The system pre-processes distortion correction data based on different shooting distances and fields of view, so that when panoramic photography is performed, the appropriate correction parameters are already available for immediate application, enabling real-time distortion correction without complex calculations during image generation.
Solution Approach 2:
The patent implements parameter changes by dynamically adjusting correction parameters based on the actual shooting distance and field of view. The system selects different correction parameters from the pre-built table according to the specific shooting conditions, and applies corresponding distortion correction magnitudes to different regions of the panoramic image. This allows the correction strength to vary spatially and adaptively match the actual shooting scenario.
2Area of moving object
If multiple images are spliced to create panoramic photograph, then the viewing angle coverage is improved, but splicing accuracy deteriorates due to edge distortion
Solution Approach 1:
The patent applies local quality by implementing differential distortion correction for different regions of the panoramic image. Instead of applying uniform correction, the system identifies edge regions where splicing occurs and applies targeted correction parameters to these specific areas. The correction magnitude and direction are locally optimized based on the shooting distance and field of view, ensuring that splicing seams align accurately while preserving the overall panoramic view.
3Manufacturing precision
If distortion correction is applied to panoramic images, then image quality is improved, but processing complexity increases
Solution Approach 1:
The patent significantly reduces processing complexity through preliminary action by pre-calculating all necessary distortion correction parameters and storing them in a correction parameter table during system initialization or offline processing. The table contains pre-computed correction data for various shooting distances and fields of view. During actual panoramic photography, the system only needs to lookup the appropriate parameters and apply them, avoiding complex real-time distortion calculations and greatly simplifying the processing workflow.
Data Source
AI summary
Provided are a panoramic photographing method and device, a camera and a mobile terminal, the method includes: when panoramic photographing is performed, firstly, a ranging device acquires the depth information of the object to be photographed, that is, the distance between the object to be photographed and the photographing device, and then the offset corresponding to the current distance is acquired according to a preset mapping relationship, and the original imaging of the object to be photographed is subsequently shifted in the panoramic image to form a corrected panoramic image.