IMAGE EDITING

Image editing is a process of altering or changes the images it ay be digital, analog photographs.
it is also known as image/ photo retouching.
graphic software may be divided into two parts:

1. vector graphic editor
2. raster graphic editor

RASTER IMAGES are stored in the form of grid of elements or pixels.
VECTOR IMAGES are stored in the form of lines,beizer spline, and text.

AUTOMATIC IMAGE ENCHANCEMENT:

computer image editing program offer some basic program that often making changes in the image enchancement feature that correct the color and brightness of the image. such as red eye removal, cropping of image...

DIGITAL DATA COMPRESSION:

many images use data compression technique to reduce the size and space of storing the image.

when image are stored in JPEG format the compression is automatically done.

some compression algorithm are used such as those used PNG format they donot lose and imformation when file is saved. 

while when the JPEG format are used having more compression and more information is lost.

while when the JPG format uses the knowledge way the human eye percieve color to make this loss of detail less noticiable.

IMAGE EDITOR FEATURE:

IMAGE SIZE ALTERATION:

In this can resize the image in a process called IMAGE SCALING making them larger or smaller. it is used a mathematical process called resampling to calculate the pixels.

 CROPPING AN IMAGE:

In this the unwanted part of the image is removed, the resolution of the area cropped is not reduced.

the main reson for cropping is to improve the image composition in the new image.

NOISE REDUCTION:

it is a feature of adding or removing noise from an image.when extra image noise is removed from the image it increases the quality of the image.and exessive noise reduction loss the detail of the application.

SELECTIVE COLOR CHANGE:

In this editor having color swapping technique for changing the color of a particular image in many time and sowing many different color.

IMAGE ORIENTION:

image editor are capable of altering and rotating the image in any direction at any degree. In this mirror images is also created and images can be flipped horizontally or vertically.

SHARPING AND SOFTEN THE IMAGE:

graphic programs can be used to sharpen and blur the images.in this EDGE ENHANCEMENT is mainly used to sharpen the images.