What is Computer Graphics?

The term computer graphics includes almost everything on computers that is not text or sound. Today almost every computer can do some graphics, and people have even come to expect to control their computer through icons and pictures rather than just by typing.

Here in our lab at the Program of Computer Graphics, we think of computer graphics as drawing pictures on computers, also called rendering. The pictures can be photographs, drawings, movies, or simulations -- pictures of things which do not yet exist and maybe could never exist. Or they may be pictures from places we cannot see directly, such as medical images from inside your body.

We spend much of our time improving the way computer pictures can simulate real world scenes. We want images on computers to not just look more realistic, but also to BE more realistic in their colors, the way objects and rooms are lighted, and the way different materials appear. We call this work "realistic image synthesis", and the following series of pictures will show some of our techniques in stages from very simple pictures through very realistic ones.

3d Extrusion , Mobile Integration ,Camera Raw ,3D printing Tools ,Color Replacement Tool In Adobe Photoshop

3D extrusion

With the Extended version of Photoshop CS5, 2D elements of an artwork can easily become three-dimensional with the click of a button. Extrusions of texts, an available library of materials for three-dimensional, and even wrapping two-dimensional images around 3D geometry.^[35]

Mobile integration

Third-party plugins have also been added to the most recent version of Photoshop where technologies such as the iPad have integrated the software with different types of applications. Applications like the Adobe Eazel painting app allows the user to easily create paintings with their fingertips and use an array of different paint from dry to wet in order to create rich color blending.^[36]

Camera Raw

With the Camera Raw plug-in, raw images can be processed without the use of Adobe Photoshop Lightroom, along with other image file formats such as JPEGs, TIFFs, or PNGs. The plug-in allows users to remove noise without the side-effect of over-sharpening, add grain, and even perform post-crop vignetting.

3D printing tools

Requiring Photoshop version 14.1 or later, users can create and edit designs for 3D printing. After downloading 3D photo models from numerous online services, users can add color, adjust the shape or rotate the angles. Artists can also design 3D models from scratch

Color replacement tool

The Color Replacement Tool allows you to change the color, while maintaining the highlights and shadows of the original image, of pieces of the image. By selecting Brushs and right clicking, the Color Replacement Tool is the third option down. What is important to note with this tool is the foreground color. The foreground color is what will be applied when painting along the chosen part of the image with the Color Replacement Tool.

Video Editing in Adobe Photoshop cc

Video editing

In Adobe CS5 Extended edition, video editing is comprehensive and efficient with a broad compatibility of video file formats such as MOV, AVI, MPEG-4, and FLV formats and easy workflow. Using simple combination of keys video layers can easily be modified, with other features such as adding text and the creation of animations using single images.^[35]

Eraser Tool in Adobe Photoshop

Eraser

The Eraser tool erases content based on the active layer. If the user is on the text layer, then any text across which the tool is dragged will be erased. The eraser will convert the pixels to transparent, unless the background layer is selected. The size and style of the eraser can be selected in the options bar. This tool is unique in that it can take the form of the paintbrush and pencil tools. In addition to the straight eraser tool, there are two more available options – background eraser and magic eraser. The background eraserdeletes any part of the image that is on the edge of an object. This tool is often used to extract objects from the background. The magic eraser tool deletes based on similar colored pixels. It is very similar to the magic wand tool. This tool is ideal for deleting areas with the same color or tone that contrasts with the rest of the image.^[34]

Magic wand Tool In Adobe Photoshop cc

Magic wand

The magic wand tool selects areas based on pixels of similar values. One click will select all neighboring pixels of similar value within a tolerance level set by the user. If theeyedropper tool is selected in the options bar, then the magic wand can determine the value needed to evaluate the pixels; this is based on the sample size setting in theeyedropper tool. This tool is inferior to the quick selection tool which works much the same but with much better results and more intuitive controls. The user must decide what settings to use or if the image is right for this tool.^[33]

Lasso Tool in Adobe Photoshop cc

Lasso

The lasso tool is similar to the "marquee" tool, however, the user can make a custom selection by drawing it freehand.^[25] There are three options for the "lasso" tool – regular, polygonal, and magnetic. The regular "lasso" tool allows the user to have drawing capabilities. Photoshop will complete the selection once the mouse button is released. The user may also complete the selection by connecting the end point to the starting point. The "marching ants" will indicate if a selection has been made. The "polygonal lasso" tool will draw only straight lines, which makes it an ideal choice for images with many straight lines. Unlike the regular "lasso" tool, the user must continually click around the image to outline the shape. To complete the selection, the user must connect the end point to the starting point just like the regular lasso tool. "Magnetic lasso" tool is considered the smart tool. It can do the same as the other two, but it can also detect the edges of an image once the user selects a starting point. It detects by examining the color pixels as the cursor move over the desired area. A pixel is the smallest element in an image. Closing the selection is the same as the other two, which should also should display the "marching ants" once the selection has been closed.^[31]

Moving Tool In Adobe Photoshop

Moving

The move tool can be used to drag the entirety of a single layer or more if they are selected. Alternatively, once an area of an image is highlighted, the move tool can be used to manually relocate the selected piece to anywhere on the canvas.^[25]

^{this tool is use to move the one layer to other layer .first select layer form right side of the panel and move up and down to move layers} 

Clicing tool in Adobe Photoshop

Slicing

The "slice" and slice select tools, like the crop tool, are used in isolating parts of images. The slice tool can be used to divide an image into different sections, and these separate parts can be used as pieces of a web page design once HTML and CSS are applied.^[29] The slice select tool allows sliced sections of an image to be adjusted and shifted.

Cropping Tool In Abode Photoshop cc

Cropping

The crop tool can be used to select a particular area of an image and discard the portions outside the chosen section. This tool assists in creating a focus point on an image and excluding unnecessary or excess space.^[27] Cropping allows enhancement of a photo’s composition while decreasing the file size. The "crop" tool is in the tools palette, which is located on the right side of the document. By placing the cursor over the image, the user can drag the cursor to the desired area. Once the Enter key is pressed, the area outside the rectangle will be cropped. The area outside the rectangle is the discarded data, which allows for the file size to be decreased.

Selection Tool in Adobe Photoshop

Selection tools

Selection tools are used to select all or any part of a picture to perform cut, copy, edit, or retouching operations.

Selection tool is use to select any thing in picture and select and past to other place 

Shape tool in Adobe Photoshop

Shape tools

Photoshop provides an array of shape tools including rectangles, rounded rectangles, ellipses, polygons and lines. These shapes can be manipulated by the pen tool, direct selection tool etc. to make vector graphics

Tools Of Adobe Photoshop Pen Tool

Pen tool

Photoshop includes a few versions of the pen tool. The pen tool creates precise paths that can be manipulated using anchor points. The free form pen tool allows the user to draw paths freehand, and with the magnetic pen tool, the drawn path attaches closely to outlines of objects in an image, which is useful for isolating them from a background.

Shortcut key for pen tool is p and peen tool is use to selection the any thing in pics and color it and change and cut any thing on it .

What is Adobe Photoshop ?

Adobe Photoshop is a raster graphics editor developed.

Photoshop was created in 1988 by Thomas and John Knoll. 

Photoshop files have default file extension as .PSD, which stands for "Photoshop Document." A PSD file stores an image with support for most imaging options available in Photoshop.