Panoramic Camera Frame Rate Control for Power Optimization

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Solution Overview

Problem

Panoramic cameras face challenges with high power consumption, computational demands, and data storage requirements due to high frame rates and multiple image sensors, which can compromise image detail and security when trying to reduce these factors.

Innovation Solution

The frame rates of image sensors in a panoramic camera are set differently based on their angles relative to the monitored scene, with lower frame rates for sensors capturing objects that move fewer pixels and higher frame rates for those capturing objects that move more pixels, allowing for efficient data processing and reduced power consumption.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If high frame rates are used for all image sensors, then motion capture quality is improved, but power consumption and computational demands increase

Engineering Contradiction:
Improvemotion capture qualityVSAvoidpower consumption
Core Design Contradiction:
Measurement precisionVSUse of energy by moving object

Solution Approach 1:

The patent applies local quality by assigning different frame rates to different image sensors based on their specific angular positions and motion characteristics. Sensors capturing high-motion regions (those with larger angles relative to the path structure) use higher frame rates, while sensors in low-motion regions use lower frame rates, optimizing power consumption while maintaining motion capture quality where needed.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The patent implements dynamics by making the frame rate configuration adaptive to the monitored scene's characteristics. The system dynamically determines optimal frame rates for each sensor group based on the angular intervals and motion patterns, allowing the camera system to adjust its operational parameters rather than using a static high frame rate for all sensors.

Inventive Principle:
Principle #15Dynamics

2Measurement precision

If high frame rates are used for all image sensors, then motion detail is improved, but computational demands increase

Engineering Contradiction:
Improvemotion detailVSAvoidcomputational demands
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent reduces computational demands by applying local quality - processing high-resolution, high-frame-rate data only from sensors that capture regions with significant motion (larger angular intervals), while using lower frame rates for sensors in regions with minimal motion. This localized approach maintains motion detail where needed while reducing overall computational complexity.

Inventive Principle:
Principle #3Local quality

3Use of energy by moving object

If resolution is reduced to lower power consumption, then power consumption is improved, but image quality deteriorates

Engineering Contradiction:
Improvepower consumptionVSAvoidimage quality
Core Design Contradiction:
Use of energy by moving objectVSMeasurement precision

Solution Approach 1:

The patent resolves this contradiction by applying local quality - maintaining high image quality and resolution for sensors capturing regions with significant motion (larger angular intervals) while allowing reduced resolution for sensors in regions with minimal motion. This ensures image quality is preserved where it matters most while reducing power consumption overall.

Inventive Principle:
Principle #3Local quality

Data Source

PatentUS12114076B2Differential frame rate settings
Publication Date: 2024.10.08 AXIS
  • US12114076B2 patent drawing
  • US12114076B2 patent drawing
  • US12114076B2 patent drawing

AI summary

There is provided techniques for setting frame rates of a camera. The camera comprises a plurality of image sensors arranged to capture images to be stitched into a panorama image of a scene. Information of a respective angle between the optical axis of each of the plurality of image sensors and a direction along which a straight path structure, to be monitored by the camera, extends through the scene is obtained. The plurality of image sensors are divided into at least two groups as a function of the angles. All the angles of the image sensors within each of the at least two groups are part of its own continuous angle interval. One frame rate is set per each of the at least two groups. The frame rate decreases from the group with highest continuous angle interval towards the group with lowest continuous angle interval.