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Dive into the research topics where Thomas Sri Widodo is active.

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Featured researches published by Thomas Sri Widodo.


international symposium on information technology | 2010

FPGA implementation of pipelined 2D-DCT and quantization architecture for JPEG image compression

Enas Dhuhri Kusuma; Thomas Sri Widodo

Two dimensional DCT takes important role in JPEG image compression. Architecture and VHDL design of 2-D DCT, combined with quantization and zig-zag arrangement, is described in this paper. The architecture is used in JPEG image compression. DCT calculation used in this paper is made using scaled DCT. The output of DCT module needs to be multiplied with post-scaler value to get the real DCT coefficients. Post-scaling process is done together with quantization process. 2-D DCT is computed by combining two 1-D DCT that connected by a transpose buffer. This design aimed to be implemented in cheap Spartan-3E XC3S500 FPGA. The 2-D DCT architecture uses 3174 gates, 1145 Slices, 21 I/O pins, and 11 multipliers of one Xilinx Spartan-3E XC3S500E FPGA and reaches an operating frequency of 84.81 MHz. One input block with 8×8 elements of 8 bits each is processed in 2470 ns and pipeline latency is 123 clock cycles.


international conference on information technology, computer, and electrical engineering | 2014

Temperature response analysis based on pulse width irradiation of 2.45 GHz microwave hyperthermia

Imam Santoso; Thomas Sri Widodo; Adhi Susanto; Maesadjie Tjokronagoro

This paper describes the temperature response analysis due to the heat effect as a result of microwave hyperthermia irradiation in biological medium for a finite duration time. Since we use the on and off irradiation method, realized by pulse width signal with certain duty cycle value, it is important to know whether the on heating duration can generate sufficient desired heat and the off duration decrease significantly. The bioheat transfer equation and its approximation can help us in analyzing the above relation. According to the analysis and real experiment, our proposed pulse width irradiation with 10s pulse period and its duty cycle variation values used in our 2.45 GHz microwave hyperthermia system can provide sufficient temperature increase during on duration and not significant decrease temperature during off duration, to get the required hyperthermia temperature response.


International Journal of Computer Science and Information Technology | 2011

OPTIMIZED FUZZY LOGIC APPLICATION FOR MRI BRAIN IMAGES SEGMENTATION

Indah Soesanti; Adhi Susanto; Thomas Sri Widodo; Maesadji Tjokronagoro


Archive | 2011

Principal Component Analysis combined with First Order Statistical Method for Breast Thermal Images Classification

Adhi Susanto; Thomas Sri Widodo


international conference on electronics and information engineering | 2010

Noise filtering on thermal images acquired by modified ordinary digital camera

S. Ratna Sulistiyanti; Thomas Sri Widodo; Adhi Susanto; Gede Bayu Suparta


Archive | 2011

Surface (2D) Fitting to Exhibit the Inaccessible Isotherms Contours of Thermograms Acquired by a Consumer Digital Camera

S. Ratna Sulistiyanti; Adhi Susanto; Thomas Sri Widodo; Gede Bayu Suparta


World Academy of Science, Engineering and Technology, International Journal of Electrical, Computer, Energetic, Electronic and Communication Engineering | 2010

Histogram Slicing to Better Reveal Special Thermal Objects

S. Ratna Sulistiyanti; Adhi Susanto; Thomas Sri Widodo; Gede Bayu Suparta


IAES International Journal of Artificial Intelligence | 2012

Classifying the EEG Signal through Stimulus of Motor Movement Using New Type of Wavelet

Endro Yulianto; Adhi Susanto; Thomas Sri Widodo; Samekto Wibowo


Jurnal Nasional Teknik Elektro dan Teknologi Informasi (JNTETI) | 2013

Penapisan Artifak Logam pada Citra CT-scan dengan Spatial Filter

Andrey Nino Kurniawan Nino Kurniawan; Thomas Sri Widodo; Indah Soesanti


Jurnal Sistem Komputer | 2012

Sistem Pengenalan Iris Mata Berdasar Tekstur Menggunakan Ekstraksi Ciri Energi pada Alihragam Wavelet Haar

R. Rizal Isnanto; Imam Santoso; Teguh Dwi Prihartono; Thomas Sri Widodo; Suhardjo Suhardjo; Adhi Susanto

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