
Event cameras are advantageous for tasks that require vision sensors with low-latency and sparse output responses. However, the development of deep network algorithms using event cameras has been slow because of the lack of large labelled event camera datasets for network training. This paper reports a method for creating new labelled event datasets by using a text-to-X model, where X is one or multiple output modalities, in the case of this work, events. Our proposed text-to-events model produces synthetic event frames directly from text prompts. It uses an autoencoder which is trained to produce sparse event frames representing event camera outputs. By combining the pretrained autoencoder with a diffusion model architecture, the new text-to-events model is able to generate smooth synthetic event streams of moving objects. The autoencoder was first trained on an event camera dataset of diverse scenes. In the combined training with the diffusion model, the DVS gesture dataset was used. We demonstrate that the model can generate realistic event sequences of human gestures prompted by different text statements. The classification accuracy of the generated sequences, using a classifier trained on the real dataset, ranges between 42% to 92%, depending on the gesture group. The results demonstrate the capability of this method in synthesizing event datasets.
FOS: Computer and information sciences, 2606 Control and Optimization, I.2.10, I.2.6; I.2.7; I.2.10, Computer Science - Artificial Intelligence, I.2.6, 1708 Hardware and Architecture, I.2.7, Computer Vision and Pattern Recognition (cs.CV), Computer Science - Computer Vision and Pattern Recognition, 68T99, 1702 Artificial Intelligence, Artificial Intelligence (cs.AI), 2808 Neurology, 570 Life sciences; biology, 10194 Institute of Neuroinformatics
FOS: Computer and information sciences, 2606 Control and Optimization, I.2.10, I.2.6; I.2.7; I.2.10, Computer Science - Artificial Intelligence, I.2.6, 1708 Hardware and Architecture, I.2.7, Computer Vision and Pattern Recognition (cs.CV), Computer Science - Computer Vision and Pattern Recognition, 68T99, 1702 Artificial Intelligence, Artificial Intelligence (cs.AI), 2808 Neurology, 570 Life sciences; biology, 10194 Institute of Neuroinformatics
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