Digital maps can be stored and distributed electronically using compressed raster image formats. We introduce a storage system for the map images that supports compact storage size, decompression of partial image, and smooth transitions between various scales. The main objective of the proposed storage system is to provide map images for real-time applications that use portable devices with low...

Current digital image/video storage, transmission and display technologies use uniformly sampled images. On the other hand, the human retina has a nonuniform sampling density that decreases dramatically as the solid angle from the visual fixation axis increases. Therefore, there is sampling mismatch between the uniformly sampled digital images and the retina. This paper introduces retinally rec...

Electronic imaging systems transfer views of real-world scenes or objects into digital bits for storage, manipulation, and viewing. In the area of bitonal images, a large market exists in document management, which consists of scanning volumes of papers for storage and retrieval. However, high scan densities produce huge volumes of data, requiring compression and decompression techniques to pre...

These Image Compression is the solution associated with transmission and storage of large amount of information for digital Image. Image Compression is the method of reducing the image size without corrupting the excellence of the image. And the interest in data hiding has raised with the recent activity in digital copyright security method. To protect the ownership of a digital image is to sec...

High-Content Digital Microscopy enhances user comfort, data storage and analysis throughput, paving the way to new researches and medical diagnostics. A digital microscopy platform aims at capturing an image of a cover slip, at storing information on a file server and a database, at visualising the image and analysing its content. We will discuss how the Python ecosystem can provide such softwa...

In an image browsing environment there is need for a design that allows viewing image subregions in progressively higher resolutions. We describe a storage scheme that accomplishes good image compression ratios, while providing fast image subre-gion retrieval in various resolutions. This storage scheme is applied on the quantized coeecient matrices obtained from the application of wavelet trans...

AIM To compare digital panoramic images acquired for the presurgical assessment of third molars captured with a storage phosphor-based system with conventional film panoramic radiographs. METHODS AND MATERIALS A total of 51 pairs of digital and conventional panoramic images, made simultaneously, were included in this study. The images were evaluated for diagnostic quality prior to third molar...

In many areas of commerce, government, academia, hospitals, and homes, large collections of digital images are being created. However, in order to make use of it, the data should be organized for efficient searching and retrieval. An image retrieval system is a computer system for browsing, searching and retrieving images from a large database of digital images. Due to diversity in content and ...

For many applications in machine vision, digital photogrammetry and scientific research image sequences of rapidly moving objects have to be acquired with high temporal resolution. If the standard video rate (30 frames/sec NTSC resp. 25 frames/sec CCIR) is not sufficient, high-speed solid state cameras may be considered offering frame rates of up to 15,000 frames per second. As the processing o...

Information is generated at very high speed in today’s Digital Era. Images have vast share in Information generated, so it’s important to reduce the image file size for storage and effective communication. Image compression technique helps in reducing storage and bandwidth requirement for transmission. Optimization of Image compression algorithms is the basic crux of this paper. DCT is most pop...