Wide Image Video Sequence Generation Using Multi-Camera Projective Transformation
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Solution Overview
Problem
Conventional video recording and display methods struggle to capture a wide field of view effectively, particularly in sports events, where a camera must be positioned far away to show the entire field, resulting in a small image with limited detail, and zooming in on parts of the field compromises the overall image quality.
Innovation Solution
The method involves combining simultaneous video sequences from multiple cameras to create a wide image video by determining the projective transformation between camera coordinates, allowing for the generation of a virtual camera with an extremely wide field of view, where every point in the scene is recorded by at least one camera, and intensity is transferred to form a synthetic wide image, enabling seamless viewing and display on various screens.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If a camera is positioned far away from the field to capture the whole field, then the field of vision is sufficient, but the image detail becomes very small
Solution Approach 1:
The patent divides the field of view into multiple segments, each captured by a separate camera. Multiple cameras are positioned at different locations to capture different portions of the field simultaneously. These segmented images are then digitally combined to form a complete wide-angle view that maintains both the overall field coverage and the detail quality of individual segments.
2Manufacturing precision
If a camera zooms in on different parts of the field, then the image detail is improved, but the whole image is lost
Solution Approach 1:
The patent merges multiple individual camera images that each capture detailed views of specific field portions. By combining these images through digital image processing and coordinate transformation, the system produces a composite wide-angle image that simultaneously preserves the detailed information from each camera while presenting the complete field view.
3Area of moving object
If multiple cameras are used to cover a wide field of vision, then the field of vision is improved, but the device complexity increases
Solution Approach 1:
The patent uses digital copying and transformation of image data from multiple cameras to create a virtual wide-angle view. Instead of requiring a single complex camera system, the invention copies images from multiple simpler cameras and processes them through coordinate transformations and blending algorithms to produce the final composite image, thereby reducing individual device complexity while achieving the desired wide field of view.
Data Source
AI summary
The invention relates to a video recording apparatus comprising: a microprocessor (130), a memory means (120) for storing program for generating a set of calibration parameters related to a device having at least two video cameras which are arranged in a predetermined relationship to each other, said parameters being unique for the at least two cameras and their current location as related to the object being recorded; said memory means (120) also storing program for recording of wide image video sequences; read and write memory means (140) for storing data relating to recorded video sequences from at least two video cameras; input means (300) for input of manual input of parameters, input of recorded video sequences, output means (300) for output of a wide image video sequence. The invention also relates to a method for generating a wide image video sequence, said method comprising the steps of generating a set of calibration parameters related to a device having at least two video cameras which are arranged in a predetermined relationship to each other, said parameters being unique for the at least two cameras and their current location as related to the object being recorded; recording synchronously video sequences using each of said at least two video cameras, and generating a wide image video sequence from each of said synchronously recorded video sequences.