Lifelog Camera Thumbnail Analysis for Bandwidth Reduction
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Solution Overview
Problem
Conventional lifelog cameras generate large amounts of image data due to high-quality image capture frequency, leading to inefficiencies in bandwidth consumption and long transfer times, with most captured images being of little interest to the user.
Innovation Solution
The use of thumbnail images for efficient transfer and analysis, where thumbnails are generated from high-resolution images, analyzed for transfer criteria such as face detection, content changes, and redundancy, and then used to identify and transfer only relevant high-resolution images, reducing data processing power and bandwidth usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If high-resolution images are captured frequently to improve image quality and photographic memory coverage, then image quality and completeness are improved, but bandwidth consumption and transfer time increase significantly
Solution Approach 1:
The patent segments the image transfer process into two phases: first transferring compressed thumbnail versions of all captured images for analysis, then selectively transferring only the full-resolution images that meet transfer criteria. This segmentation reduces initial bandwidth consumption while preserving the ability to transfer high-quality images when needed.
Solution Approach 2:
The patent creates compressed thumbnail copies of the original high-resolution images. These thumbnails serve as surrogates for analysis purposes, allowing the system to evaluate which images warrant full-resolution transfer without transmitting all original images, thereby reducing bandwidth consumption.
2Loss of information
If all captured images are transferred to external storage to ensure complete data preservation, then data completeness is improved, but transfer time and processing overhead increase
Solution Approach 1:
The patent performs preliminary analysis of thumbnail images before deciding which full-resolution images to transfer. Transfer criteria are evaluated in advance based on thumbnail content, allowing the system to pre-determine the subset of images requiring full-resolution transfer, thus reducing overall transfer time.
Solution Approach 2:
The patent extracts and transfers only the subset of images that meet predetermined transfer criteria, separating them from the larger collection of captured images. This extraction approach ensures that important images are preserved while avoiding the time cost of transferring all images.
3Productivity
If thumbnail images are analyzed on the lifelog camera to reduce transfer data, then processing efficiency is improved, but the camera's limited processing power is strained
Solution Approach 1:
The patent uses thumbnail images as intermediary representations of the full-resolution images. These thumbnails require minimal processing power to generate and analyze, serving as lightweight surrogates that enable efficient image evaluation without straining the camera's limited processing capabilities.
4Device complexity
If thumbnail images are transferred and analyzed externally to reduce camera processing, then processing capability requirements are reduced, but additional transfer overhead is introduced
Solution Approach 1:
The patent changes the resolution parameter of images, creating low-resolution thumbnails for transfer and analysis. This parameter transformation allows external devices with greater processing power to efficiently analyze image content and determine which full-resolution images should be transferred, reducing the processing capability requirements of the lifelog camera.
Data Source
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AI summary
A system and method of preparing images captured by a lifelog camera for efficient transfer from the camera to another device. The lifelog camera generates a corresponding thumbnail for each image that it captures, and an automated analysis engine analyzes the thumbnails for interestingness and, in some cases, for similarity.