Multi-view Picture Encoding Using Selective Camera Parameter Transmission
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Solution Overview
Problem
Existing methods for encoding and decoding moving pictures captured by a single camera are inefficient when applied to multi-view pictures, which require capturing and compressing scenes from multiple cameras, making it difficult to enhance encoding efficiency in fields like realistic communications and virtual reality.
Innovation Solution
An apparatus and method that utilize camera parameters such as arrangement type, translation, rotation angle, focus distance, and principle point to selectively encode and decode multi-view pictures, using flag information to determine if camera parameters have changed, thereby optimizing encoding and decoding processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If all camera parameters are transmitted for every frame, then decoding accuracy is improved, but transmission bandwidth and encoding complexity increase
Solution Approach 1:
The patent extracts and transmits only the changed camera parameters rather than all parameters. The encoding apparatus compares current camera parameters with reference parameters, identifies only the differences, and transmits solely those changed parameters to the decoding apparatus, thereby reducing transmission data volume while maintaining decoding accuracy.
Solution Approach 2:
The patent performs preliminary comparison of camera parameters before transmission. The encoding apparatus pre-computes which parameters have changed by comparing current parameters with reference parameters, and prepares only the necessary changed parameter information for transmission, avoiding unnecessary data transmission.
2Adaptability or versatility
If camera parameters are transmitted frequently, then encoding adaptability is improved, but encoding complexity and processing time increase
Solution Approach 1:
The patent applies partial action by transmitting only the necessary changed camera parameters rather than all parameters. This selective transmission approach provides sufficient adaptability for decoding while significantly reducing encoding complexity and processing requirements.
Solution Approach 2:
The patent implements dynamic parameter transmission where the encoding apparatus adaptively determines which parameters to transmit based on actual changes. The system dynamically adjusts transmission content according to the specific frame and camera parameter changes, rather than using a fixed transmission scheme.
3Ease of manufacture
If single-camera encoding methods are applied to multi-view pictures, then encoding simplicity is maintained, but encoding efficiency deteriorates
Solution Approach 1:
The patent extends single-camera encoding concepts to multi-view pictures by using universal camera parameter comparison mechanisms. The same principle of comparing and transmitting only changed parameters applies whether encoding single-camera or multi-view pictures, providing a unified approach that maintains simplicity while improving efficiency for multi-view scenarios.
Data Source
AI summary
An apparatus and method for encoding and decoding a multi-view picture using a camera parameter are provided. The multi-view moving picture encoding apparatus includes: a multi-view picture receiver which receives the multi-view picture and a plurality of camera parameters; a camera parameter information setting unit which selects a camera parameter to be used for encoding the multi-view picture from among the plurality of the received camera parameters, and sets information which indicates the selected camera parameter; and an encoder which encodes the multi-view picture on the basis of the set information. Therefore, it is possible to enhance multi-view picture encoding efficiency.