Image Menu

Image
Mode
RGB: RGB images use three colors, or channels, to reproduce up to 16.7 million colors on-screen; the three channels translate to 24 (8 x 3) bits of color information per pixel. (In 16-bit-per-channel images, this translates to 48 bits per pixel, with the ability to reproduce many more colors.) In addition to being the default mode for new Photoshop images, the RGB model is used by computer monitors to display colors. This means that when working in color modes other than RGB, such as CMYK, Photoshop temporarily uses RGB mode for display on-screen.
CMYK: CMYK mode, each pixel is assigned a percentage value for each of the process inks. The lightest (highlight) colors are assigned small percentages of process ink colors, the darker (shadow) colors higher percentages. For example, a bright red might contain 2% cyan, 93% magenta, 90% yellow, and 0% black. In CMYK images, pure white is generated when all four components have values of 0%.
Grayscale Mode: This mode uses up to 256 shades of gray. Every pixel of a grayscale image has a brightness value ranging from 0 (black) to 255 (white). Grayscale values can also be measured as percentages of black ink coverage (0% is equal to white, 100% to black). Images produced using black-and-white or grayscale scanners typically are displayed in Grayscale mode.
Lab Color: You can use Lab mode to work with Photo CD images, edit the luminance and the color values in an image independently, move images between systems, and print to PostScript® Level 2 and Level 3 printers. To print Lab images to other color PostScript devices, convert to CMYK first.
Bitmap Mode: This mode uses one of two color values (black or white) to represent the pixels in an image. Images in Bitmap mode are called bitmapped 1-bit images because they have a bit depth of 1. (See Specifying 8-bit color display (Photoshop).)
Adjust: All Photoshop and ImageReady color adjustment tools work essentially the same way: by mapping an existing range of pixel values to a new range of values. The difference between the tools is the amount of control they provide. For an overview summary of the color adjustment tools, see Basic steps for correcting images.
Duplicate: This command is used to duplicate the required text or bitmap image.
F Select the text/Bitmap image.
F Click on image and click at duplicate.
Apply image: - The Apply Image command lets you blend one image's layer and channel (the source) with a layer and channel of the active image (the destination).
F Click on image.
F Click at apply image.
F Set the available option.
F Click at ok.
Calculation: The Calculations command lets you blend two individual channels from one or more source images. You can then apply the results to a new image or to a new channel or selection in the active image. You cannot apply the Calculations command to composite channels.
F Click on image.
F Click at calculation.
F Set the available option.
F Click at ok.
Image Size: In order to produce high-quality images, it is important to understand how the pixel data of images is measured and displayed.
F Click on image and click at image size.
F Type the width and height in the dimension box.
F Set the regulations.
F Click at ok.
Canvas Size: The Canvas Size command lets you add or remove work space around an existing image. You can crop an image by decreasing the canvas area. Added canvas appears in the same color or transparency as the background.
F Click on image and click at canvas size.
F Type the canvas size in the width and height box.
F Click at ok.
Crop: - Cropping is the process of selecting and removing a portion of an image to create focus or strengthen its composition. You can crop an image by either hiding or deleting. If the image only has a background layer, you can only delete.
F Select the bitmap image.
F Click on image and click at crop.
Rotate: - Rotate Canvas commands let you rotate or flip an entire image. The commands do not work on individual layers or parts of layers, paths, or selection borders.
F Click on image menu and click at rotate.
F Choose any-one rotate style.
Trap: After you have converted an image to CMYK, you can adjust the color trap. Trap is the overlap needed to ensure that a slight misalignment or movement of the plates while printing does not affect the final appearance of the print job. If any distinctly different colors in your image touch, you may need to overprint them slightly to prevent tiny gaps from appearing when the image is printed. This technique is known as trapping. In most cases, your print shop will determine if trapping is needed and tell you what values to enter in the Trap dialog box.
F First of all change your mode.
F Click on image and click at trap.
F Set the trap no.
F Click at Ok
Extract: - Extract command provides a sophisticated way to isolate a foreground object and erase its background on a layer. Even objects with wispy, intricate, or indefinable edges may be clipped from their backgrounds with a minimum of manual work.
F Click on image and click at extract.
F Select image area.
F Click fill tool.
F Overlap the selected area.
F Click at ok.
Liquefy: This command is used to increase to decrease in the bitmap image.
F Click on image and click at Liquefy.
F Use the any-one tool.
F Click at ok.