Low Power Image Capture Framework with Scene Analysis

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Solution Overview

Problem

Mobile image capture devices face resource constraints such as limited memory, processing power, and energy, which hinder their ability to continuously capture and store high-resolution images without overheating, making it challenging to efficiently manage image storage and processing.

Innovation Solution

A low-power image capture framework that includes an image sensor, an imaging pipeline, a temporary image buffer, and a scene analyzer, which analyzes images to determine whether to store or discard them, and an image compression component that compresses images for storage only when deemed necessary, allowing the device to adjust capture modes based on image desirability and conserve resources.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the mobile image capture device continuously captures and stores high-resolution images, then the image quality and quantity are improved, but the memory usage and power consumption increase, causing the device to overheat

Engineering Contradiction:
Improveimage capture rateVSAvoidpower consumption
Core Design Contradiction:
ProductivityVSUse of energy by moving object

Solution Approach 1:

The scene analyzer performs preliminary analysis on captured images to determine their desirability before committing them to permanent storage. This preliminary action (analysis and selection) prevents unnecessary compression and storage operations on undesired images, thereby reducing power consumption and heat generation while maintaining high capture rates for desired images

Inventive Principle:
Principle #10Preliminary action

2Quantity of substance

If the mobile image capture device compresses and stores all captured images, then the memory retention is improved, but the processing power and energy are excessively consumed

Engineering Contradiction:
Improveimage storage capacityVSAvoidprocessing power
Core Design Contradiction:
Quantity of substanceVSPower

Solution Approach 1:

The scene analyzer enables the system to serve itself by automatically identifying and selecting desired images for storage without requiring external intervention or processing of all captured images. This self-service mechanism reduces the processing power required for image management while ensuring that meaningful images are retained in memory

Inventive Principle:
Principle #25Self-service

3Duration of action of moving object

If the mobile image capture device increases memory resources for continuous storage, then the image storage duration is improved, but the device size and cost increase

Engineering Contradiction:
Improvestorage durationVSAvoiddevice size
Core Design Contradiction:
Duration of action of moving objectVSVolume of moving object

Solution Approach 1:

The system implements a selective retention strategy where undesired images are automatically discarded after temporary buffering, while desired images are retained for long-term storage. This discarding and recovering approach extends the effective storage duration without requiring proportionally larger memory resources, as the memory is continuously reused for new captures after older undesired images are discarded

Inventive Principle:
Principle #34Discarding and recovering

4Manufacturing precision

If the mobile image capture device performs continuous image processing, then the image curation quality is improved, but the thermal power dissipation exceeds the device limits

Engineering Contradiction:
Improveimage processing qualityVSAvoidthermal power dissipation
Core Design Contradiction:
Manufacturing precisionVSObject-generated harmful factors

Solution Approach 1:

The scene analyzer applies localized processing only to specific regions or aspects of images that require analysis for desirability determination, rather than performing full-image processing on all captures. This local quality approach maintains high processing quality for selected images while reducing overall thermal power dissipation by avoiding unnecessary processing of undesired images

Inventive Principle:
Principle #3Local quality

Data Source

PatentUS9838641B1Low power framework for processing, compressing, and transmitting images at a mobile image capture device
Publication Date: 2017.12.05 GOOGLE LLC
  • US9838641B1 patent drawing
  • US9838641B1 patent drawing
  • US9838641B1 patent drawing

AI summary

The present disclosure provides an image capture, curation, and editing system that includes a resource-efficient mobile image capture device that continuously captures images. In particular, the present disclosure provides low power frameworks for processing, compressing, and transmitting images at a mobile image capture device. One example low power framework includes a scene analyzer that analyzes a scene depicted by a first image and determines whether to store the first image in a non-volatile memory or to discard the first image from a temporary image buffer without storing the first image in the non-volatile memory.