Open Access Open Access  Restricted Access Subscription or Fee Access

Parameter Estimation for Coefficient Thresholding in Block-based Compressive Video Coding

I. Wahidah, Hendrawan, T. L. R. Mengko, A.B. Suksmono


To simplify the encoding process, we propose the compressive sampling (CS) with coefficient thresholding in a video coding system. By applying a sparsifying transform, we acquire a sparser signal in DCT basis. A couple of tests are conducted. The first one is to decide the threshold value between significant and non-significant coefficient. The second test is to decide whether a particular block is suitable for compressive or conventional sampling. We derive those threshold values analytically and verify them by simulation. Then, a random Gaussian measurement matrix performs projection on the sample vector to yield a smaller vector. Simulation results show that the required compressive sampling threshold depends on the specified measurement rate. This is in agreement with the theoretical analysis.


Compressive sampling, video coding, coefficient thresholding, sparse representations.

Full Text:


Disclaimer/Regarding indexing issue:

We have provided the online access of all issues and papers to the indexing agencies (as given on journal web site). It’s depend on indexing agencies when, how and what manner they can index or not. Hence, we like to inform that on the basis of earlier indexing, we can’t predict the today or future indexing policy of third party (i.e. indexing agencies) as they have right to discontinue any journal at any time without prior information to the journal. So, please neither sends any question nor expects any answer from us on the behalf of third party i.e. indexing agencies.Hence, we will not issue any certificate or letter for indexing issue. Our role is just to provide the online access to them. So we do properly this and one can visit indexing agencies website to get the authentic information. Also: DOI is paid service which provided by a third party. We never mentioned that we go for this for our any journal. However, journal have no objection if author go directly for this paid DOI service.