Jakub Stankowski

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In this paper, we present the most efficient coding tools that are used in a new video compression technology for multiple views with the depth maps. This very well performing technology was designed and developed in response to MPEG Call for Proposals on 3D Video Coding Technology. The proposed technology exploits a tool that reduces the side views and the(More)
In this paper, we present the original compression technology that was designed and developed at Poznan University of Technology in response to MPEG Call for Proposals on 3D Video Coding Technology. One view is coded in the HEVC syntax while the side views and the depth maps are very efficiently coded exploiting various redundancies that are related to(More)
We propose a new coding technology for 3D video represented by multiple views and the respective depth maps. The proposed technology is demonstrated as an extension of the recently developed high efficiency video coding (HEVC). One base views are compressed into a standard bitstream (like in HEVC). The remaining views and the depth maps are compressed using(More)
During the last two decades, a new technology generation of video compression was introduced about each 9 years. Each new compression-technology generation provides halving of necessary bitrates as compared to the last previous generation. This increasing single-view compression performance is related to increasing compression performance of multiview video(More)
The paper deals with multiview video coding using the new technology of High Efficiency Video Coding (HEVC). Implementation of multiview video coding in the framework of HEVC is described together with new specific tools proposed by the authors. Extensive experimental results are reported for compression performance comparison of MVC (ISO 14496-10), HEVC(More)
The paper presents an extension of 3D-HEVC for the circular camera arrangements. It generalizes the derivation of the disparity vectors from depth data for sequences captured using cameras located on an arc. The general equation for disparity calculations has been implemented instead of the simplified equation used in 3D-HEVC. Experiments have been(More)
The paper describes watermarking of compressed video bitstreams. This technique is proven to be very fast and robust against various attacks including camcorder recording attack. The watermark is embedded using indirect modifications of transform coefficients in selected Pand B-frames. In the watermarked bitstream there exist sequences of watermarked(More)
A computationally inexpensive watermark schema for MPEG-4 AVC/H.264 streams that use local mark strength adjustment minimizing visible artifacts is presented. The local mark strength adjustment mechanism and watermark embedding mechanism operate on residual data. This approach minimize the number of operations needed for video bitstream decoding and(More)