PENGUJIAN KOMPESI CITRA DIGITAL MENGGUNAKAN METODE DISCRETE COSINE TRANSFORM (DCT) DAN LEMPEL ZIV WELCH (LZW)

APRILIANTA, TRI KUR and Samsuryadi, Samsuryadi (2019) PENGUJIAN KOMPESI CITRA DIGITAL MENGGUNAKAN METODE DISCRETE COSINE TRANSFORM (DCT) DAN LEMPEL ZIV WELCH (LZW). Undergraduate thesis, Sriwijaya University.

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Abstract

Image Compression is a method for transmitting data to be more effective and efficient. There are two techniques in compression that are used namely; lossless compression and lossy compression. In lossless compression using the Lempel Ziv Welch method while in lossy compression it uses the Discrete Cosine Transform method. Each algorithm is tested with 30 grayscale image data and divided into 3 categories based on dimensions, with small size (256x256), medium (512x512) and large (1024x1024) with bmp format. The results of the test show the results of the Discrete Cosine Transform method has an optimal compression ratio with a value of 0.65 and the Lempel Ziv Welch method, get an optimal compression ratio value only for medium size (512x512) and MSE LZW value of 0 which means there is no pixel value that is reduced.

Item Type:	Thesis (Undergraduate)
Uncontrolled Keywords:	Pengolahan Citra, Kompresi Data
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) > TA1501-1820 Applied optics. Photonics > TA1632.A48 Image processing.
Divisions:	09-Faculty of Computer Science > 55201-Informatics (S1)
Depositing User:	Users 4409 not found.
Date Deposited:	17 Jan 2020 07:24
Last Modified:	17 Jan 2020 07:24
URI:	http://repository.unsri.ac.id/id/eprint/24431

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