Certain investigations on MRI brain images using image down sampling technique

Abstract

Nowadays wired and especially wireless networks are widespread, and therefore transmitting data packets over error prone networks is a very important task.Accelerated development in electronic technology and computer hardware brought about substantive increase in display devices offering a wide range of image resolutions e.g., computer monitors laptop computer screens personal digital assistants and cell phones To convert images with different resolutions between devices with different display sizes it is desirable to develop efficient image down newlinesampling and up sampling interpolation techniques Image down sampling is a process to make a digital image smaller by removing pixels Conventionally digital color images are represented by setting specific values of the color space coordinates for each pixel. Color spaces with decoupled luminance and chrominance coordinates YUV type allow the number of bits required for acceptable color description of an image to be reduced This reduction is based on greater sensitivity of the human eye to changes in luminance than to changes in chrominance The idea behind this approach is to set individual value of luminance component to each pixel while assigning the same color chrominance components to certain groups of pixels sometimes called macro pixels in accordance with some specific rules newline newline