Patent ID: 11971956
Assignee: AMAZON TECHNOLOGIES, INC.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 3:
4. A computer-implemented method comprising:
receiving a request to train a visual neural network;
training the visual neural network using:
visual-to-visual contrastive learning according to a first loss function using the visual neural network on a first video clip, a positive video clip extracted from a same video as the first video clip, and a negative video clip extracted from a different video as the first video clip, and
secondary-to-secondary contrastive learning according to a second loss function using a secondary neural network on secondary positive information and secondary negative information generated from the positive and negative video clips, including applying flow edge maps as inputs to the secondary neural network; and

applying the first and second loss functions to the visual neural network.