Keypoint Prediction Training With Heatmap-Regression Fusion
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Solution Overview
Problem
Regression-based methods for keypoint detection suffer from lower accuracy and stability, making them unsuitable for edge platforms with limited computational power, while heatmap-based methods are too slow for practical applications.
Innovation Solution
A keypoint prediction model training method that combines feature map extraction, loss determination, and model parameter updating to enhance accuracy and stability, using a server to train a model that can be deployed on edge devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If regression-based methods are used for keypoint detection, then computational speed is improved, but accuracy and stability deteriorate
Solution Approach 1:
The patent combines heatmap-based methods and regression-based methods into a unified keypoint detection framework. The model simultaneously learns heatmap representation and regression prediction, allowing the system to benefit from both approaches: the heatmap provides accurate keypoint location guidance while the regression component ensures computational efficiency. This merging resolves the contradiction by integrating the strengths of both methods.
Solution Approach 2:
The patent employs a composite loss function that integrates multiple loss components (heatmap loss, regression loss, and consistency loss) to train the keypoint detection model. This composite approach combines the accuracy benefits of heatmap-based methods with the speed advantages of regression-based methods, creating a hybrid solution that achieves both high accuracy and computational efficiency.
2Measurement precision
If heatmap-based methods are used for keypoint detection, then accuracy is improved, but computational speed deteriorates
Solution Approach 1:
The patent merges heatmap-based methods and regression-based methods into a unified framework where the model simultaneously performs heatmap regression and coordinate prediction. This integration allows the system to achieve the accuracy of heatmap methods while maintaining the computational efficiency of regression methods, resolving the speed-accuracy tradeoff.
Solution Approach 2:
The patent segments the keypoint detection task into two complementary components: heatmap generation for accurate location estimation and regression prediction for efficient coordinate output. By dividing the detection process into these two segments that work together, the system achieves both high accuracy and computational speed.
3Productivity
If regression-based methods are used for keypoint detection, then computational efficiency is improved, but stability deteriorates
Solution Approach 1:
The patent combines heatmap-based methods and regression-based methods into a unified keypoint detection framework. The model simultaneously learns heatmap representation and regression prediction, allowing the system to benefit from both approaches: the heatmap provides accurate keypoint location guidance while the regression component ensures computational efficiency. This merging resolves the contradiction by integrating the strengths of both methods.
Data Source
AI summary
A method includes: obtaining one or more sample keypoints in a sample image and first sample position information of the one or more sample keypoints; extracting a plurality of feature maps of the sample image using a to-be-trained keypoint prediction model; determining first predicted position information of the one or more sample keypoints, and first predicted offset information of one or more target pixel regions where the one or more sample keypoints are located in the plurality of feature maps; determining a model loss value based on the first sample position information, the first predicted position information, first sample offset information of the one or more target pixel regions where the one or more sample keypoints are located, and the first predicted offset information; and updating model parameters of the to-be-trained keypoint prediction model based on the model loss value to obtain a trained keypoint prediction model.


