UNIT III GRAPHICS PROGRAMMING

1. State the resolution of Facsimile, Document Images and Photographic Images? 
Facsimile – 100 to 200 dpi Document images – 300 dpi (dots/pixels per inch) Photographic images – 600 dpi

2. What is the compression technique used in Facsimile and Document Images?
Facsimile - CCITT Group3 Document Images - CCITT Group4

3. What are the applications of Photographic Images?
Photographic images are used in Imaging Systems that are used for identification such as Security Badges Fingerprint Cards Photo Identification Systems

4. What is Raster graphics?
Raster graphics are digital images created or captured (for example, by scanning in a photo) as a set of samples of a given space. A raster is a grid of x and y coordinates on a display space. (And for three-dimensional images, a z coordinate.) A raster image file identifies which of these coordinates to illuminate in monochrome or color values. The raster file is sometimes referred to as a bitmap because it contains information that is directly mapped to the display grid.A raster file is usually larger than a vector graphics image file. A raster file is usually difficult to modify without loss of information, although there are software tools that can convert a raster file into a vector file for refinement and changes. Examples of raster image file types are: BMP, TIFF, GIF, and JPEG files.

5. Define computer graphics animation?
Computer graphics animation is the use of computer graphics equipment where the graphics output presentation dynamically changes in real time. This is often also called real time animation.

6. What is key frame?
One of the shape photographs that a film or video is made of the shape of an object is known initially and for a small no of other frames called keyframe

UNIT III GRAPHICS PROGRAMMING

1. State the properties of Holographic images?

Holographic images are not clear diagrams 3-dimensional can also be recorded on materials other than photographic plates records intensity of light and phase created by coherent light using a laser beam

2. Define Fractals?

Fractals are regular objects with a high degree of irregular shapes. It is a lossy compression technique but it doesn’t change the shape of the image. Fractals are decompressed images that result from a compression format

3. Explain Fractal Compression?

Fractal Compression is based on image content i.e., it is based on similarity of patterns within an image. The steps in Fractal compression are a digitized image is broken into segments the individual segments are checked against a library of fractals the library contains a compact set of numbers called iterated function these system codes will reproduce the corresponding fractal

4. State the applications of Document Imaging?

Document Imaging is used in organizations such as Insurance agencies Law offices Country and State Governments Federal Government Department of Defence (DOD)

5. Define Compression Efficiency?

Compression Efficiency is defined as the ratio in bytes of an uncompressed image to the same image after compression.

6. What is Image Processing?

Image Processing refers to processing a digital image using a digital computer. An image processing system will alter the contents of the image. It involves Image Recognition, Image Enhancement, Image Synthesis and Image Reconstruction.