Transformer Pose Prediction Using Ordinal Regression

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Solution Overview

Problem

Current hand pose estimation methods in gesture recognition face challenges with noise, unclear edges, and low resolution in depth images, limiting their accuracy and robustness.

Innovation Solution

A method involving a transformer-based approach that extracts feature maps from input images, including depth images, to predict joint point coordinates using ordinal regression models, generating x, y, and z classification feature volumes for precise pose prediction.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If depth images are used for hand pose estimation, then three-dimensional pose prediction capability is improved, but image quality deteriorates due to noise, unclear edges, and low resolution

Engineering Contradiction:
Improvethree-dimensional pose prediction capabilityVSAvoidimage quality
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The patent merges RGB images and depth images into a combined input for the transformer model. The RGB image provides high-quality visual information with clear edges and colors, while the depth image provides three-dimensional spatial structure information. By processing both image types simultaneously through the transformer architecture, the system achieves accurate 3D pose prediction while compensating for the weaknesses of individual modalities.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The transformer model acts as an intermediary that processes and integrates features from both RGB and depth images. The model extracts features from the combined input and uses ordinal regression to predict joint point coordinates, effectively translating the noisy depth information into accurate pose predictions by leveraging the complementary strengths of both image types.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Ease of operation

If conventional pose estimation methods are used, then processing simplicity is maintained, but prediction accuracy deteriorates in noisy or low-resolution conditions

Engineering Contradiction:
Improveprocessing simplicityVSAvoidpose prediction accuracy
Core Design Contradiction:
Ease of operationVSMeasurement precision

Solution Approach 1:

The patent replaces conventional pose estimation methods with a transformer-based deep learning approach. Instead of using traditional computer vision algorithms that struggle with noisy depth images, the system employs a transformer model with self-attention mechanisms to automatically learn and extract relevant features from combined RGB and depth inputs, achieving superior accuracy in challenging conditions.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent changes the fundamental parameters of the pose estimation approach by using ordinal regression to predict joint point coordinates directly from image features. Rather than estimating poses through multiple intermediate steps or assumptions, the model directly regresses 3D coordinates of joint points, improving precision while maintaining computational efficiency.

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentUS20240046505A1Electronic device and method with pose prediction
Publication Date: 2024.02.08 SAMSUNG ELECTRONICS CO LTD
  • US20240046505A1 patent drawing
  • US20240046505A1 patent drawing
  • US20240046505A1 patent drawing

AI summary

An electronic device for predicting a pose and a method of operating the electronic device are provided. The method includes extracting a feature map from an input image, predicting coordinates of a joint point from the feature map using an ordinal regression model, and predicting a pose of an object using the predicted coordinates of the joint point.