Tile-Based Image Distribution for Digital Pan-Tilt Latency
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Solution Overview
Problem
Existing image distribution systems face challenges in efficiently transmitting high-quality image data to users, particularly when switching between different resolutions and during digital pan/tilt movements, leading to delays due to the need for intra-frame compression.
Innovation Solution
An image distribution apparatus that acquires information about a user-specified gazing area and transmits tile images from higher resolution images, allowing for immediate display by pre-transmitting adjacent tile images, reducing the need to wait for intra-frame compression.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If high-quality image data is transmitted, then image quality is improved, but transmission time and processing delay increase
Solution Approach 1:
The high-resolution image is divided into multiple tile images, allowing selective transmission of only the tiles needed for the current gazing area rather than transmitting the entire high-resolution image, thus reducing transmission delay while maintaining image quality in the visible area
Solution Approach 2:
Adjacent tile images are pre-transmitted along with the current gazing area tiles, so that when the user pans or tilts, the next tiles are already available for immediate display without waiting for compression and transmission delays
2Productivity
If intra-frame compression is applied, then transmission efficiency is improved, but processing time increases
Solution Approach 1:
By segmenting the image into tiles, the system can transmit smaller tile units that require less compression processing time compared to compressing the entire high-resolution image, while still achieving efficient transmission through selective tile delivery
Solution Approach 2:
Adjacent tiles are compressed and transmitted in advance alongside the current gazing area tiles, reducing the processing time burden on the critical path by performing compression operations parallel to user interaction
3Loss of information
If the entire high-resolution image is transmitted, then complete image data is provided, but transmission data volume and time increase
Solution Approach 1:
The image is divided into tiles, and only the tiles corresponding to the current gazing area plus adjacent tiles are transmitted, providing sufficient image data for current and near-future display needs without transmitting the entire high-resolution image
Solution Approach 2:
High-resolution tile images are transmitted for the gazing area and adjacent areas where detail is needed, while avoiding transmission of tiles in areas currently outside the gazing area, optimizing the balance between data completeness and transmission efficiency
Data Source
AI summary
An image distribution apparatus includes an acquisition unit configured to acquire information about a gazing area specified by a user in a first image, and a transmission unit configured to transmit, from a second image having resolution higher than resolution of the first image and divided into a plurality of tile images, a first tile image where the gazing area belongs and a second tile image adjacent to the first tile image.