Online human action recognition framework

spacetime interest points, svm classifier, bag of words

The product is able to do detect human actions in video on the fly. It is based on online version of local spatio-temporal feature extractor for description of spatio-temporal interest regions. These local features are transformed by codeword transfomation into bag-of-words descriptors. The descriptors are constructed from the predefined number of input frames and are classified using arbitrary number of linear svm classifiers (one for each class to be detected). Classifier's output can be converted to decision, if the classified action is presented in an current part of a video or not. The product is modular. The feature extractor can be replaced by another type, the number of classifiers is not restricted, and even another type of classifiers can be used. All components, the codebook and all classifiers have to be prepared, trained and evaluated in another framework; here all of them are only used for online prediction.

http://www.fit.vutbr.cz/research/prod/index.php.cs?id=204

Brno University of Technology, faculty of Information Technology IČ 00216305, Božetěchova 2, 612 66 Brno, (further only FIT BUT) is entitled to license the authorized software accessible at the "Authorized software" page http://www.fit.vutbr.cz/research/prod/index.php.cs?id=204 (further only authorized software). Everyone who uses the software in any way at least once becomes the user. The user agrees to comply to the following conditions of use.

Before first usage of the software the user expressed his/her agreement with the following license conditions:

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- is only possible to use in compliance with these license conditions; the user must ensure that the conditions are fulfilled by the eventual third party who is able to access the authorized software,

- it is not allowed to sell, rent, or otherwise transfer the license without the permission of FIT BUT,

- is not allowed to include into other software product and distribute the such products derived from the original authorized software without the permission of FIT BUT, or modify the internal structure in any other way,

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- is not allowed to reverse analyze, decompile, or modify in any other way,

- authorized software is not possible to use for commercial purposes; the commercial usage is only allowed with the permission of FIT BUT.

As the license is granted for free, the software is not covered with any guarantee (this is valid to the maximum extent possible under the law). The user accepts the software "as it is" without any guarantee of any kind, namely, but not limited to, the guarantee of suitability for sales, suitability for the purpose, occurrence of flaws, functionality, quality, performance, or continuous availability or compatibility with other software. Brno University of Technology (to the maximum possible extent under the law) disclaims the duty to compensate any expenses connected with exploitation of the software now and in the future.

If any of the above conditions is violated, the license is automatically terminated and the user must stop use the authorized software immediately.