Raster graphics explained

The prevalence of digital technology has entered every sphere of technological activity and they are a very significant component of digital cameras whose functioning is based on the efficiency of these digital technological tools. It is necessary to remember that in digital cameras there are no photographic films like those of the early analog cameras and therefore storage of captured images are dependent on storage devices provided with the camera in the form of memory cards. These images are then transferred to the computer with the help of the USB port. Within the computer, there are provided several software applications which can be put into use in order to alter or enhance the images or edit them according to choice. The digital cameras also support certain fixed image file formats which heed to be supplemented by the computer as well for image editing and image processing. Raster graphics image refer to a bitmap or a digital image which is a kind of computer graphic induced image and it is saved within the image files having different formatting. These graphics are made of a set of pixels arranged in the form of a rectangular framework and can be viewed most prominently with the aid of computers.

The pixels in Raster graphics is made of the three primary colors viewable to the human eye, namely, red, blue and green and these colors call for greater resolution power thus requiring about a single byte. While on the contrary, in case of black and white images, the requirement is about a single bit per pixel. Unlike the raster graphics, vector graphics are known to present the imagery in the form of geometrical shapes like polygonal structures and curves. A pixmap refers to a colored raster graphic image which is comprised of one to eight bits corresponding to each pixel including those of the primary colors. It is to be noted here that the raster graphics are immensely dependent on resolution.