Image Processing Expert

The function textattr in conio.h can be use for this purpose a small program has presented here...

#include<conio.h>

int main()

{

textattr(129);

cprintf("My name is John Smith...");

return 0;

}

here in the textattr till 128 only colors would be set and more than it colors with blink.

1. RGB model- used for color monitors & color video camera

2. CMY model-used for color printing

3. HIS model--used for color image processing

4. YIQ model-used for color picture transmission

Subjective brightness means intensity as preserved by the human visual system.

Brightness adaptation means the human visual system can operate only from scotopic to glare limit. It cannot operate over the range simultaneously. It accomplishes this large variation by changes in its overall intensity.

c) False Contours

This effect arises when the number brightness levels is lower that which the human eye can distinguish.

The number of bits required to store a digital image is

b=M X N X k

When M=N, this equation becomes

b=N^2k

d) sampling

Explanation: The sampling points are ordered in the plane and their relation is called a Grid.

1. RGB model

2. CMY model

3. YIQ model

4. HSI model

The need for transform is most of the signals or images are time domain signal (ie) signals can be measured with a function of time. This representation is not always best. For most image processing applications anyone of the mathematical transformation are applied to the signal or images to obtain further information from that signal.

1. 4 connectivity

2. 8 connectivity

3. M connectivity (mixed connectivity)

Zooming may be viewed as over sampling. It involves the creation of new pixel

locations and the assignment of gray levels to those new locations.

1. Short term storage for use during processing.

2. Online storage for relatively fast recall.

3. Archival storage for infrequent access.

d) nearest neighbour interpolation

Its called as Nearest Neighbour Interpolation since for each new location the intensity of the next neighbouring pixel is assigned.

In software engineering, structural design patterns are design patterns that ease the design by identifying a simple way to realize relationships between entities.

d) None of the Mentioned

All the options can be used to represent spatial resolution.

The range of values spanned by the gray scale is called dynamic range of an image. Image will have high contrast, if the dynamic range is high and image will have dull washed out gray look if the dynamic range is low.

A Color model is a specification of 3D-coordinates system and a subspace within that system where each color is represented by a single point.

The hue of a perceived color depends on the adoption of the viewer. For example,the American Flag will not immediately appear red, white, and blue of the viewer has been subjected to high intensity red light before viewing the flag. The color of the flag will appear to shift in hue toward the red component cyan.

The two types of light receptors are

• Cones and

• Rods

Mach band effect means the intensity of the stripes is constant. Therefore it preserves the brightness pattern near the boundaries, these bands are called as mach band effect.