Estimation of depth fields suitable for video compression based on 3-D structure and motion of objects

Download
1998-6
Intensity prediction along motion trajectories removes temporal redundancy considerably in video compression algorithms. In three-dimensional (3-D) object-based video coding, both 3-D motion and depth values are required for temporal prediction. The required 3-D motion parameters for each object are found by the correspondence-based E-matrix method. The estimation of the correspondences-two-dimensional (2-D) motion field-between the frames and segmentation of the scene into objects are achieved simultaneously by minimizing a Gibbs energy. The depth field is estimated by jointly minimizing a defined distortion and bit-rate criterion using the 3-D motion parameters. The resulting depth field is efficient in the rate-distortion sense, Bit-rate values corresponding to the lossless encoding of the resultant depth fields are obtained using predictive coding; prediction errors are encoded by a Lempel-Ziv algorithm. The results are satisfactory for real-life video scenes.

Citation Formats
A. A. Alatan and L. Onural, “Estimation of depth fields suitable for video compression based on 3-D structure and motion of objects,” IEEE Transactions on Image Processing, vol. 7, no. 6, pp. 904–908, 1998, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/28567.