Goran Savić
University of Belgrade
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Publication
Featured researches published by Goran Savić.
mediterranean conference on embedded computing | 2015
Goran Savić; Milan Prokin; Vladimir Rajović; Dragana Prokin
State-of-the-art inverse subband transformer implementations employ significant amount of memory resources for the realization of synchronization memory banks between different levels of the composition. This paper presents a hardware realization of inverse subband transformer without synchronization memory banks between different levels of the composition. Such realization achieves significant savings in both memory and logic resources. The proposed realization also provides significant savings in time resources due to a minimum delay which inverse subband transformer introduces into an image decompression system.State-of-the-art direct subband transformer implementations employ significant amount of memory resources for the realization of synchronization memory banks between different levels of the decomposition. This paper presents a hardware realization of direct subband transformer without synchronization memory banks between different levels of the decomposition. Such realization achieves significant savings in both memory and logic resources. The proposed realization also provides significant savings in time resources due to a minimum delay which direct subband transformer introduces into an image compression system.
telecommunications forum | 2014
Vladimir Rajović; Goran Savić; Milan Prokin
We approached the problem of hardware realization of an image encoder which minimizes the required memory resources, is fast and has a high compression ratio. It is shown that, using various improvements and novelties, it is possible to implement entire color image encoder within a low cost programmable logic device with no external memory components.
Circuits Systems and Signal Processing | 2017
Goran Savić; Milan Prokin; Vladimir Rajović; Dragana Prokin
This paper presents high-performance and memory-efficient hardware architectures for one-dimensional (1-D) and two-dimensional (2-D) inverse discrete wavelet transform (DWT) 5/3 filters. The proposed 1-D filter architecture requires 33% less memory resources and 17% less logic resources than the best state-of-the-art solutions. The proposed 1-D filter architecture has 100% hardware utilization, which is defined as the ratio of the actual computation time to the total processing time, both expressed in numbers of clock cycles. It allows a 7% higher operational frequency and simultaneously has the lowest total power dissipation in comparison with the best state-of-the-art solutions. The proposed 2-D inverse DWT 5/3 architecture, based on the proposed 1-D inverse DWT filter design, provides medium total computing time and output latency, but outperforms the best state-of-the-art solutions for at least 20% in terms of required memory capacity.
Microprocessors and Microsystems | 2018
Goran Savić; Milan Prokin; Vladimir Rajović; Dragana Prokin
Abstract This paper describes the efficient one-dimensional forward and inverse discrete wavelet transformers with 5/3 filter. This design reuses the same registers for both low-pass and high-pass filtering in different time slots. It utilizes 33% less registers, 17% less logic elements, has 7% higher maximum operating frequency and 2% lower total power dissipation than state-of-the-art filters.
mediterranean conference on embedded computing | 2017
Goran Savić; Milan Prokin; Vladimir Rajović; Dragana Prokin
This paper describes the efficient one-dimensional inverse discrete wavelet transformer with 5/3 filter. The described design makes use of the same registers for both low-pass and high-pass filtering in different time slots. The design utilizes 33% less registers, 17% less logic elements, has 7% higher maximum operating frequency and 2% lower total power dissipation than state-of-the-art filters.
mediterranean conference on embedded computing | 2017
Goran Savić; Milan Prokin; Vladimir Rajović; Dragana Prokin
This paper describes the efficient one-dimensional forward discrete wavelet transformer with 5/3 filter. This design reuses the same registers for both low-pass and high-pass filtering in different time slots. It utilizes 33% less registers, 17% less logic elements, has 7% higher maximum operating frequency and 2% lower total power dissipation than state-of-the-art filters.
Journal of Real-time Image Processing | 2016
Goran Savić; Milan Prokin; Vladimir Rajović; Dragana Prokin
We implemented a more efficient circuit for one-dimensional (1-D) forward discrete wavelet transform (DWT) 5/3 filter. Our design utilizes processing and memory resources that are wasted in some other state-of-the-art solutions and is at least 33% simpler in terms of used registers, is 17% simpler in terms of used logic elements, has 7% higher maximum operating frequency and has 2% lower total power dissipation than previously published designs. The advantages of our design are achieved by a novel non-stationary filter topology which reuses the same registers for generating both low-pass and high-pass output coefficients, in different time slots, due to feed-forward and feedback paths. Our design is suitable for image compression systems which use 5/3 filter, e.g., JPEG 2000. We also proposed two-dimensional (2-D) DWT 5/3 architecture which uses implemented 1-D DWT filter design. The proposed 2-D DWT architecture outperforms all previously published architectures in terms of required memory capacity, which is at least 20% lower than memory capacity in any other reported solution.
telecommunications forum | 2014
Goran Savić; Milan Prokin; Vladimir Rajović; Dragana Prokin
State-of-the-art inverse filtering and image composition methods require significant memory resources for the synchronization between different levels of image composition. This paper presents novel inverse filtering and image composition method without synchronization memory between different levels of image composition. This solution also enables significant savings in memory and logic resources, and minimizes the delay which inverse filter and image composition brings into image decompression system.
telecommunications forum | 2014
Goran Savić; Milan Prokin; Vladimir Rajović; Dragana Prokin
State-of-the-art direct filtering and image decomposition methods require significant memory resources for the synchronization between different levels of image decomposition. This paper presents novel direct filtering and image decomposition method without synchronization memory between different levels of image decomposition. This solution also enables significant savings in memory and logic resources, and minimizes the delay which direct filter and image decomposition method brings into image compression system.
Journal of Circuits, Systems, and Computers | 2018
Goran Savić; Vladimir Rajović