Psychovisual Comparison of Image Compressing Methods for Multifunctional Development under Laboratory Circumstances
نویسنده
چکیده
In our days, interactive multimedia based client equipment (desktop), a palmtop or an equipment capable of mobile sound transmission (mobile phone, communicator) are all, though in different ways, suitable for interactive (multimedia based) knowledge transfer. The aim of developers is to pass the same knowledge no matter through what kind of medium. The practical realization of such multifunctional (on the equipment side) development raises several difficulties for the developers. The research was carried out under laboratory circumstances. Images compressed with the use of different compressing methods (Fractal, MrSID Wavelet, JPEG Wavelet) are compared to each other and to uncompressed TIFF images. Key-Words: Psychovisual, Compressing, Multifunctional, Saturation, Shades, Recognition
منابع مشابه
Comparison and Application Possibilities of JPEG and Fractal-based Image Compressing Methods in the Development of Multimedia Based Material
Digitised visual information plays a great role in most multimedia based material. Even CDROMs are being outgrown by higher-level applications. Although a new technology (DVD) was introduced last year, the data structure optimised for this is likely to condense visual information in a losing way. There are several good methods based on adaptive DCT. A less well-known but extremely effective one...
متن کاملThe Optimal Quantization Matrices for Jpeg Image Compression from Psychovisual Threshold
The JPEG image compression method has been widely implemented in digital camera devices. The quantization process plays a primary role in JPEG image compression. The quantization process is used to determine the visibility threshold of the human visual system. The quantization tables are generated from a series psychovisual experiments from several angle points of experimental views. This paper...
متن کاملIntegrating a Smooth Psychovisual Threshold into an Adaptive JPEG Image Compression
The visual quality image output of JPEG compression is determined by quantization process. The popular quality factor in the extended JPEG image compression has been widely used to scale up the quantization tables. The scaling quantization table using quality factor is used to determine the quality image output. The scaling up on the quantization tables increases their values uniformly thus pro...
متن کاملA Novel Psychovisual Threshold on Large DCT for Image Compression
A psychovisual experiment prescribes the quantization values in image compression. The quantization process is used as a threshold of the human visual system tolerance to reduce the amount of encoded transform coefficients. It is very challenging to generate an optimal quantization value based on the contribution of the transform coefficient at each frequency order. The psychovisual threshold r...
متن کاملA Psychovisual Threshold for Generating Quantization Process in Tchebichef Moment Image Compression
A human visual system can hardly respond to small differences in image signals. A full colour image carries a certain amount of perceptual redundancy for the human eyes. The sensitivity human eye of the color image can be measured by a psychovisual threshold. The sensitivity of the human eye is useful for perceptual visual image in image compression. The quantization tables are obtained to dete...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2004