Action Reimagined: Text-to-Pose Video Editing for Dynamic Human Actions

• URL: http://arxiv.org/abs/2403.07198v1
• Date: Mon, 11 Mar 2024 22:46:46 GMT
• Title: Action Reimagined: Text-to-Pose Video Editing for Dynamic Human Actions
• Authors: Lan Wang, Vishnu Boddeti, and Sernam Lim
• Abstract summary: ReimaginedAct comprises video understanding, reasoning, and editing modules. Our method can accept not only direct instructional text prompts but also what if' questions to predict possible action changes.
• Score: 49.14827857853878
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We introduce a novel text-to-pose video editing method, ReimaginedAct. While existing video editing tasks are limited to changes in attributes, backgrounds, and styles, our method aims to predict open-ended human action changes in video. Moreover, our method can accept not only direct instructional text prompts but also `what if' questions to predict possible action changes. ReimaginedAct comprises video understanding, reasoning, and editing modules. First, an LLM is utilized initially to obtain a plausible answer for the instruction or question, which is then used for (1) prompting Grounded-SAM to produce bounding boxes of relevant individuals and (2) retrieving a set of pose videos that we have collected for editing human actions. The retrieved pose videos and the detected individuals are then utilized to alter the poses extracted from the original video. We also employ a timestep blending module to ensure the edited video retains its original content except where necessary modifications are needed. To facilitate research in text-to-pose video editing, we introduce a new evaluation dataset, WhatifVideo-1.0. This dataset includes videos of different scenarios spanning a range of difficulty levels, along with questions and text prompts. Experimental results demonstrate that existing video editing methods struggle with human action editing, while our approach can achieve effective action editing and even imaginary editing from counterfactual questions.

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