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ACM Transactions on Multimedia Computing, Communications, and Applications (TOMM), Volume 11 Issue 3, January 2015

Progressive Motion Vector Clustering for Motion Estimation and Auxiliary Tracking
Ke Chen, Zhong Zhou, Wei Wu
Article No.: 33
DOI: 10.1145/2700296

The motion vector similarity between neighboring blocks is widely used in motion estimation algorithms. However, for nonneighboring blocks, they may also have similar motions due to close depths or belonging to the same object inside the scene....

A 3D-HEVC Fast Mode Decision Algorithm for Real-Time Applications
Liquan Shen, Ping An, Zhaoyang Zhang, Qianqian Hu, Zhengchuan Chen
Article No.: 34
DOI: 10.1145/2700298

3D High Efficiency Video Coding (3D-HEVC) is an extension of the HEVC standard for coding of multiview videos and depth maps. It inherits the same quadtree coding structure as HEVC for both components, which allows recursively splitting into four...

Boosted Multifeature Learning for Cross-Domain Transfer
Xiaoshan Yang, Tianzhu Zhang, Changsheng Xu, Ming-Hsuan Yang
Article No.: 35
DOI: 10.1145/2700286

Conventional learning algorithm assumes that the training data and test data share a common distribution. However, this assumption will greatly hinder the practical application of the learned model for cross-domain data analysis in multimedia. To...

Double Verification Secret Sharing Mechanism Based on Adaptive Pixel Pair Matching
Pei-Yu Lin
Article No.: 36
DOI: 10.1145/2700291

Verifiability is essential for the secret sharing approach, which allows the involved participants to detect cheaters during the secret retrieval process. In this article, we propose a double verification secret sharing (DVSS) mechanism that can...

INSTRE: A New Benchmark for Instance-Level Object Retrieval and Recognition
Shuang Wang, Shuqiang Jiang
Article No.: 37
DOI: 10.1145/2700292

Over the last several decades, researches on visual object retrieval and recognition have achieved fast and remarkable success. However, while the category-level tasks prevail in the community, the instance-level tasks (especially recognition)...

Image Enhancement in Encrypted Domain over Cloud
Ankita Lathey, Pradeep K. Atrey
Article No.: 38
DOI: 10.1145/2656205

Cloud-based multimedia systems are becoming increasingly common. These systems offer not only storage facility, but also high-end computing infrastructure which can be used to process data for various analysis tasks ranging from low-level data...

Content vs. Context: Visual and Geographic Information Use in Video Landmark Retrieval
Yifang Yin, Beomjoo Seo, Roger Zimmermann
Article No.: 39
DOI: 10.1145/2700287

Due to the ubiquity of sensor-equipped smartphones, it has become increasingly feasible for users to capture videos together with associated geographic metadata, for example the location and the orientation of the camera. Such contextual...

Robust Color Image Watermarking Using Geometric Invariant Quaternion Polar Harmonic Transform
Hong-Ying Yang, Xiang-Yang Wang, Pan-Pan Niu, Ai-Long Wang
Article No.: 40
DOI: 10.1145/2700299

It is a challenging work to design a robust color image watermarking scheme against geometric distortions. Moments and moment invariants have become a powerful tool in robust image watermarking owing to their image description capability and...