Ajith KumarayapaWayamba University of Sri lanka · Department of Electronics
Ajith Kumarayapa
Dr
About
9
Publications
211
Reads
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15
Citations
Citations since 2017
Introduction
Dr.Y.A. Ajith Kumarayapa is a permanent academics of Wayamba University of Sri Lanka since 2003. He obtained Senior Lecturer Grade 2 promotion in 2008; upgraded to SL grade 1 in 2015. He obtained PhD in Information and Communication Engineering (2008) from Dept. of Electronics & Information Engineering, Harbin Institute of Technology, Harbin, China with Fulbright Research Fellowship awarded by Ministry of Higher education SL & CSC. For PhD research he specialized Microprocessors, DSP, Digital Image processing, ROI Coding ,Optoelectronic Sensors;Low bitrate transmission for design;implementation of unman observation aircrafts based Vision systems.Obtained MSc; U. of Perad., University of Colombo he obtained B.Sc.special Hons degree in Eng. Physics (Majoring Electronics Eng.& Computer HW)
Additional affiliations
September 2004 - January 2008
Harbin Institute of Technology, Harbin, China
Position
- Researcher
Description
- PhD research under Prof. Zhang YI; specialized MM Signal acquisition (with Optoelectronic sensors, Fiber Systems, CCDs), Processing, ROI Coding & Low bitrate transmission for design & implementation of unman observation aircrafts based vision systems.
March 2003 - present
Wayamba University of Sri lanka, Kuliyapitiya
Position
- Lecturer
Description
- I have desire of teaching; endeavor to improve it since 2003. I did Teac. Technology @ HIT; CTHE Colombo University; obtained highest award; SEDA Accredited lecturer in Higher Education from UK. So, I gained confidence in teaching effectively @ challenges
Publications
Publications (9)
In Sri Lanka, we can see rapid expansions in the telecommunication network due to the growth of the network traffic. Hence the energy consumption and emission of greenhouse gasses from the telecommunication towers are rising up. Especially in off-grid areas, where the power supply for the telecommunication towers are dependent on diesel generators...
This paper explores the advanced features of JPEG 2000 and proposes the novel curvilinear-edge coding enhancement in the context of larger aerial image coding. This enhancement applies to the low resourceful on-board Machine Vision environment for the important surveillance applications. The overall memory consumption of the on-board codec's proces...
The SPIHT algorithm does not use tables in its coding strategy and it consists of easy to modify features. Therefore, it is competent to be used to design an on-board image and video still frame codec reconfigurable architecture than such designs aiming at complex JPEG 2000 codec. However, there still exists the high hardware memory consumption dra...
Enhanced Intra and Inter prediction techniques are the key factors to the success of H.264. There are a total of nine optional prediction modes for each 4 x 4 luma block. H.264 adapts Rate Distortion Optimization (RDO) technique to get high coding rate and visual quality. Because RDO is too much exhaustive, several attempts have been made to explor...
In this paper, more efficient, low-complexity and reliable region of interest (ROI) image codec for compressing smooth low
texture remote sensing images is proposed. We explore the efficiency of the modified ROI codec with respect to the selected
set of convenient wavelet filters, which is a novel method. Such ROI coding experiment analysis represe...
Popular H.26L video coding standard employ UVLC as one of its entropy coding technique, since it provides an easy way to encode all syntax elements in a regular form. However, the disadvantage of the UVLC is that it failed to conform the symbol probability distribution to get the best coding result, specially with small quantization parameter (i.e....
In this paper ,we present an overview of the implementation of navel compound algorithm for efficient low bit rate lossy and ROI lossless Mix Coding of massive three dimensional images. Moreover the compound algorithm can be used for multitasking Remote Sensing field operations and efficient 3-D image transmission applications such as overall image...
Popular H.26L video coding standard employ UVLC as one of its entropy coding technique, since it provides an easy way to encode all syntax elements in a regular form. However, the disadvantage of the UVLC is that it failed to conform the symbol probability distribution to get the best coding result, specially with small quantization parameter (i.e....
