Enhancing quality of lossy compressed images using minimum decreasing techniques

العناوين الأخرى

تحسين جودة الصور المضغوطة عن طريق الضغط المنقوص باستخدام تقنيات إنقاص الحد الأدنى

مقدم أطروحة جامعية

al-Shami, Ahmad Libanun

مشرف أطروحة جامعية

Utair, Muhammad

أعضاء اللجنة

al-Shikh, Asim
al-Hamad, Husam Ahmad%

الجامعة

جامعة عمان العربية

الكلية

كلية العلوم الحاسوبية و المعلوماتية

القسم الأكاديمي

قسم علم الحاسوب

دولة الجامعة

الأردن

الدرجة العلمية

ماجستير

تاريخ الدرجة العلمية

2017

الملخص الإنجليزي

The acceleration in the development of technology has come with the urgent need to use a large amount of data, and the method of storing or transferring this information through various media in an important area, particularly in terms of quality preservation.

Digital image usage has become widespread in many fields, both scientific and commercial applications or social media, and it become improtant to process these images for optimal use within each field to maintain the quality of data used, especially during the compression process with the lossy technique.

This research aimed to improve the quality of compression in lossy techniques while preserving the compression ratio levels.

This was accomplished by adding the proposed technique that has certain steps that depend on decreaseing the minimum pixels values from the pixels values inside the image, first by decreasing each row by its minimum values then dcreasing each coloumn in the resulted image by its minimum pixels value, finally dividing the image into (2×2) blocks then finding each block minimum value then decreasing it from the entire block.

Two methods of lossy compression techniques were selected RIFD and JPEG to be applied with the proposed technqiue that should precede these lossy techniques, by applying these techniuqes on diverse images with different extensions and sizes, the results were obtained and quality standards metrics MSE, MAE and PSNR were calculated, which are known mterics in the image compression field to evalute the compression and decompressed image quality by comparing with the original image before compression.

The proposed techqniue had reduced the error results from the compression that varied depening on the used lossy technique and the image charactersitcs which are its bitdepth, deimention and pixels values.

التخصصات الرئيسية

تكنولوجيا المعلومات وعلم الحاسوب

الموضوعات

• الخوارزميات
• الصور الرقمية
• ضغط الصور

عدد الصفحات

130

قائمة المحتويات

• APA
• MLA
• AMA

لغة النص

الإنجليزية

نوع البيانات

رسائل جامعية

رقم السجل

BIM-764225