1
Anthony Vetro, Ajay Divakaran, Huifang Sun: Adaptable bitstream video delivery system. Mitsubishi Electric Research Laboratories, Dirk Brinkman, December 3, 2002: US06490320 (106 worldwide citation)

In an apparatus for transcoding a compressed video, a generator simulates constraints of a network and constraints of a user device. A classifier is coupled to receive an input compressed video and the constraints. The classifier generates content information from features of the input compressed vi ...


2
Paul DaGraca, Anthony Vetro, Ajay Divakaran, Huifang Sun: Networked surveillance and control system. Mitsubishi Electric Research Laboratories, Dirk Brinkman, November 11, 2003: US06646676 (93 worldwide citation)

A surveillance and control system includes a feature extraction unit to dynamically extract low-level features from a compressed digital video signal, a description encoder, coupled to the feature extraction unit, to encode the low-level features as content descriptors. An event detector is coupled ...


3
Daniel N Nikovski, Ajay Divakaran, Regunathan Radhakrishnan, Kadir A Peker: Detecting and diagnosing faults in HVAC equipment. Mitsubishi Electric Research Laboratories, Dirk Brinkman, Clifton D Mueller, Gene V Vinokur, October 28, 2008: US07444251 (78 worldwide citation)

A method and system detects and diagnoses faults in heating, ventilating and air conditioning (HVAC) equipment. Internal state variables of the HVAC equipment are measured under external driving conditions. Expected internal state variables are predicted for the HVAC equipment operating under the ex ...


4
Ajay Divakaran, Huifang Sun, Hiroshi Ito: Methods of feature extraction of video sequences. Mitsubishi Electric Research Laboratories, Dirk Brinkman, Andrew Curtin, September 9, 2003: US06618507 (63 worldwide citation)

This invention relates to methods of feature extraction from MPEG-2 and MPEG-4 compressed video sequences. The spatio-temporal compression complexity of video sequences is evaluated for feature extraction by inspecting the compressed bitstream and the complexity is used as a descriptor of the spatio ...


5
Anthony Vetro, Ajay Divakaran, Huifang Sun: Video transcoding using syntactic and semantic clues. Mitsubishi Electric Research Laboratories, Dirk Brinkman, June 3, 2003: US06574279 (59 worldwide citation)

A method for transcoding a compressed video partitions the compressed video into hierarchical levels, and extracts features from each of the hierarchical levels. One of a number of conversion modes of a transcoder is selected dependent on the features extracted from the hierarchical levels. The comp ...


6
Anthony Vetro, Ajay Divakaran, Huifang Sun: Adaptable compressed bitstream transcoder. Mitsubishi Electric Research Laboratories, Dirk Brinkman, Andrew J Curtin, April 1, 2003: US06542546 (52 worldwide citation)

A multi-media delivery system for delivering a compressed bitstream through a network to a user device includes a transcoder and a manager. The transcoder is configured to operate on the bit stream using in any one of a plurality of conversion modes. The manager is configured to selecting a particul ...


7
I Jong Lin, Anthony Vetro, Ajay Divakaran, Sun Yuan Kung: Method for representing and comparing multimedia content. Mitsubishi Electric Research Laboratories, Dirk Brinkman, April 8, 2003: US06546135 (48 worldwide citation)

A method for generating a representation of multimedia content by first segmenting the multimedia content spatially and temporally to extract objects. Feature extraction is applied to the objects to produce semantic and syntactic attributes, relations, and a containment set of content entities. The ...


8
Ajay Divakaran, Kadir A Peker, Huifang Sun: Method for summarizing a video using motion and color descriptors. Mitsubishi Electric Research Laboratories, Dirk Brinkman, February 24, 2004: US06697523 (41 worldwide citation)

A method extracts an intensity of motion activity from shots in a compressed video. The method then uses the intensity of motion activity to segment the video into easy and difficult segments to summarize. Easy to summarize segments are represented by any frames selected from the easy to summarize s ...


9
Ajay Divakaran, Huifang Sun, Hiroshi Ito, Tommy C Poon: Methods of scene change detection and fade detection for indexing of video sequences. Mitsubishi Electric Research Laboratories, Dirk Brinkman, September 10, 2002: US06449392 (27 worldwide citation)

This invention relates to methods of abrupt scene change detection and fade detection for indexing of MPEG-2 and MPEG-4 compressed video sequences. Abrupt scene change and fade-detection techniques applied to signals in compressed form have reasonable accuracy and the advantage of high simplicity si ...


10
Ajay Divakaran, Anthony Vetro, Huifang Sun, Peng Xu, Shih Fu Chang: Extraction of high-level features from low-level features of multimedia content. Mitsubishi Electric Research Laboratories, Dirk Brinkman, Andrew J Curtin, July 13, 2004: US06763069 (25 worldwide citation)

A method extracts high-level features from a video including a sequence of frames. Low-level features are extracted from each frame of the video. Each frame of the video is labeled according to the extracted low-level features to generate sequences of labels. Each sequence of labels is associated wi ...



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