Lossy JPEG compression is a widely used compression technique. Normally the JPEG standard technique uses three process mapping reduces interpixel redundancy, quantization, which is lossy process and entropy encoding, which is considered lossless process. In this paper, a new technique has been proposed by combining the JPEG algorithm and Symbol Reduction Huffman technique for achieving more com...

Hierarchical coding of images and continuous media can be used to e ectively control congestion in high speed net works supporting interactive multimedia communications However the tradeo s of the use of hierarchical coding have not yet been adequately investigated We have un dertaken an empirical study to investigate the e ective ness of hierarchical coding through the hierarchical mode of JPE...

Image compression is one of the important techniques used today for image and video transmission. There are many types of image compression techniques are used these days; one of them is JPEG technique. In this research, we introduce a new idea for applying the JPEG technique with Discrete Wavelet Transform (DWT) for high-resolution images. Our image compression algorithm consists of; firstly, ...

Recently, the standardization of backward compatible JPEG image coding for high dynamic range image has been undertaken to establish an international standard called JPEG XT. Currently, three profiles called Profiles A, B, and C have been proposed for JPEG XT. Whereas all these profiles perform their image coding in the spatial domain, this paper proposes a new coding approach by manipulating D...

GPS devices typically make use of images that are excessively large to be stored as a Bit Map, so the images are always compressed. The widespread compression technique is JPEG; however JPEG has a disadvantage – JPEG assumes that the average color of beginning of each blocks line is commonly similar to the average color of end of its preceding blocks line. Almost always this assumption is wrong...

JPEG-2000, the successor to JPEG, is emerging as an attractive candidate for the future de facto image compression standard. However, while it offers superior results over most other image compression techniques, it comes with a long list of features and options, and consequently a highly complex algorithm. We have developed an image coder that can compete with the performance of JPEG-2000 whil...

The JPEG committee has been continuing its activities on definition of international standards related to still image coding systems in order to prepare the ground for interoperable solutions, products and services, which make use of digital images. Currently, JPEG committee is pursuing three such efforts, namely, JPSearch, which deals with annotation, search and retrieval of digital images and...

-The paper presents a novel LBG algorithm for image compression in wavelet transform domain. The performance of the algorithm is evaluated by using standard 512×512 benchmark still images and the results compared to the traditional well-known JPEG standard. The important metric of time and Peak Signal to Noise Ratio are used to evaluate the novel algorithm. The results show that the strength of...

Digital watermarking has been considered as an important technique to protect the copyright of digital content. For a digital watermarking method to be effective, it is essential that a watermark embedded in a still or moving image resists against various attacks ranging from compression, filtering to cropping. As JPEG is a dominant still image compression standard for Internet applications, di...

The JPEG standard technique involves three process mapping reduces interpixel redundancy, quantization, which is lossy process and entropy encoding, which is considered lossless process. Lossy JPEG compression is commonly used image compression technique. In the present paper a new hybrid technique has been introduced by combining the JPEG algorithm and Symbol Reduction Huffman technique for ac...