A Proposed Modification of Baseline JPEG Standard Image Compression Technique [ READ ]
Md. Kamrul Islam, Md. Moznuzzaman, Mst. Fatema Khatun, Rubina Yesmin
Image compression is the transformation of image data in an arrangement to a more compressed form. The objective of image compression is to reduce redundancy of the image data in order to be able to store or transmit data in an efficient form. It is used in many applications like broadcast television; remote sensing via satellite, aircraft, radar or sonar; teleconferencing; computer communications; and facsimile transmission and medical images storage for patient monitoring systems. JPEG is one of the most popular compression techniques in the field of image compression. It has both lossy and lossless image compression part. The baseline mode of JPEG standard is a lossy compression technique which is the most popular among baseline, progressive and hierarchical modes of lossy part. Though the compression performance in baseline JPEG standard is good but still it needs to be improved. In this paper, the baseline JPEG compression standard has been modified to increase the performance. The proposed modification is done in entropy coding where a well known encoding technique; the arithmetic coding technique has been used. The typical baseline JPEG standard and proposed baseline JPEG standard modification has been implemented and performance has been measured. The experimental data states that the performance of the proposed baseline JPEG standard modification better than the typical lossy baseline JPEG standard in terms of space savings though the compression and decompression time is higher.
Md. Kamrul Islam, Md. Moznuzzaman, Mst. Fatema Khatun, Rubina Yesmin
Image compression is the transformation of image data in an arrangement to a more compressed form. The objective of image compression is to reduce redundancy of the image data in order to be able to store or transmit data in an efficient form. It is used in many applications like broadcast television; remote sensing via satellite, aircraft, radar or sonar; teleconferencing; computer communications; and facsimile transmission and medical images storage for patient monitoring systems. JPEG is one of the most popular compression techniques in the field of image compression. It has both lossy and lossless image compression part. The baseline mode of JPEG standard is a lossy compression technique which is the most popular among baseline, progressive and hierarchical modes of lossy part. Though the compression performance in baseline JPEG standard is good but still it needs to be improved. In this paper, the baseline JPEG compression standard has been modified to increase the performance. The proposed modification is done in entropy coding where a well known encoding technique; the arithmetic coding technique has been used. The typical baseline JPEG standard and proposed baseline JPEG standard modification has been implemented and performance has been measured. The experimental data states that the performance of the proposed baseline JPEG standard modification better than the typical lossy baseline JPEG standard in terms of space savings though the compression and decompression time is higher.
