Scene Detection Sliding Time Filtering for Wireless Devices

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Solution Overview

Problem

Existing scene detection algorithms in wireless communication devices are prone to errors and require complex implementation, especially in terms of memory size and learning phases, which complicates the refinement of decision reliability.

Innovation Solution

A method involving a sliding time filtering process using a meta filter that operates on the identifiers and confidence probabilities of detected scenes, reducing error rates and simplifying implementation by constructing a filter that operates on M identifier and probability values within a filtering window, thereby improving decision reliability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If complex classification algorithms with learning phases are used for scene detection, then detection accuracy is improved, but device complexity and memory requirements increase

Engineering Contradiction:
Improvescene detection accuracyVSAvoidalgorithm implementation complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent segments the scene detection process into two distinct phases: an offline learning phase where complex algorithms process training data to build classification models, and an online detection phase where the pre-trained model performs simple real-time classification. This segmentation allows complex computation to be performed beforehand, simplifying the device requirements during actual operation while maintaining high detection accuracy.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent performs preliminary action by conducting the learning and training process before deployment. The complex classification algorithms are trained offline using labeled scene data to create pre-computed decision models. These pre-trained models are then deployed to the device, eliminating the need for real-time learning phases and reducing the computational burden during actual scene detection operations.

Inventive Principle:
Principle #10Preliminary action

2Measurement precision

If complex classification algorithms are used for scene detection, then detection accuracy is improved, but memory size requirements increase

Engineering Contradiction:
Improvescene detection accuracyVSAvoidmemory size
Core Design Contradiction:
Measurement precisionVSQuantity of substance

Solution Approach 1:

The patent segments memory usage into offline training data storage and online model storage. The complex training datasets can be stored temporarily during offline processing, while the final deployed model requires minimal memory. This segmentation allows the system to achieve high accuracy without permanently storing large amounts of data on the device.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent creates a simplified copy of the complex classification model that can be deployed to resource-constrained devices. Instead of copying the entire training dataset and complex algorithms to the device, the system generates a compact representation or decision tree from the training process that captures the essential classification logic, significantly reducing memory requirements while preserving detection accuracy.

Inventive Principle:
Principle #26Copying

3Measurement precision

If complex algorithms with learning phases are implemented, then scene detection capability is improved, but ease of manufacture and deployment is reduced

Engineering Contradiction:
Improvescene detection capabilityVSAvoiddeployment simplicity
Core Design Contradiction:
Measurement precisionVSEase of manufacture

Solution Approach 1:

The patent performs the complex algorithm implementation and learning phase as a preliminary action during the manufacturing or deployment process, rather than requiring it during device operation. The complex algorithms are executed once during offline training to generate simplified deployment-ready models, making the actual device manufacturing and deployment straightforward while still achieving high scene detection capability.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentUS10929724B2Method and apparatus for monitoring scene detection
Publication Date: 2021.02.23 STMICROELECTRONICS (ROUSSET) SAS
  • US10929724B2 patent drawing
  • US10929724B2 patent drawing
  • US10929724B2 patent drawing

AI summary

A method is provided for monitoring scene detection by an apparatus detecting scenes from among a set of possible reference scenes. It includes an assignment of an identifier to each reference scene, detection of scenes from among the set of possible reference scenes at successive instants of detection with the aid of at least one classification algorithm, and a sliding time filtering processing of these detected current scenes over a filtering window of size M, based on the identifier of each new detected current scene taken into account in the window and a confidence probability associated with this new detected current scene, the output of the filtering processing successively delivering filtered detected scenes.