Invention Grant
- Patent Title: Dense feature scale detection for image matching
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Application No.: US17825994Application Date: 2022-05-26
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Publication No.: US11861854B2Publication Date: 2024-01-02
- Inventor: Shenlong Wang , Linjie Luo , Ning Zhang , Jia Li
- Applicant: Snap Inc.
- Applicant Address: US CA Santa Monica
- Assignee: Snap Inc.
- Current Assignee: Snap Inc.
- Current Assignee Address: US CA Santa Monica
- Agency: Schwegman Lundberg & Woessner, P.A.
- Main IPC: G06T7/246
- IPC: G06T7/246 ; G06T7/33 ; G06V10/764 ; G06V10/82 ; G06V10/44 ; G06T7/40

Abstract:
Dense feature scale detection can be implemented using multiple convolutional neural networks trained on scale data to more accurately and efficiently match pixels between images. An input image can be used to generate multiple scaled images. The multiple scaled images are input into a feature net, which outputs feature data for the multiple scaled images. An attention net is used to generate an attention map from the input image. The attention map assigns emphasis as a soft distribution to different scales based on texture analysis. The feature data and the attention data can be combined through a multiplication process and then summed to generate dense features for comparison.
Public/Granted literature
- US20220292697A1 DENSE FEATURE SCALE DETECTION FOR IMAGE MATCHING Public/Granted day:2022-09-15
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