DIFFERENT PROPERTIES OF IMAGES IN MULTIMEDIA

VARIOUS ATTRIBUTES OF IMAGES IN MULTIMEDIA


THERE ARE 4 ATTRIBUTES OF THE IMAGE WHICH ARE AS FOLLOWS-


  • SIZE
  • COLOR
  • DEPTH
  • IMAGE RESOLUTION

Size


The digital size of the image is measured in kilobytes, megabytes, or gigabytes. The file size is in the same proportion as the pixel dimension of the image. Images that have more pixels produce a more detailed picture at a given printed size but require more disk space to store them and may take a lot of time to edit and print. For example, a 1 * 1 inch 200 PPI image has 4 times more pixels than an image of 1 * 1 inch 100 PPI and also has 4 times the file size.


So image resolution becomes a medium between image quality and file size. Other factors that affect file size are GIF, Due to the different compression methods used by JPEG and PNG file formats, file sizes can be different for the same pixel dimension. Similarly, the bit depth of the colors of the image and the number of layers and channels also affect the file size.


Color


Each Adobe Photoshop has one or more channels. Each channel stores information about the color elements of the image. The number of channels available by default in an image depends on the color pattern. For example, a CMYK image has at least 4 channels.


A separate plate is defined for the plating layer of the printing process for information related to Cyan, Magenta, Yellow, and Black. In addition to these default color channels, some additional channels called alpha channels can also be added to the image. Color selections are used to store and edit like masks as well as spot color channels can also be added to add a spot color plate for printing.


Depth


Bit depth is also called pixel depth, color depth, only depth. It measures how much color information is available to display or print each pixel in an image.


More bit depth means that more colors are available in the image and the display of colors on the digital image will be more appropriate. For example, a pixel whose bit depth is one has two possible values, black and white. A pixel whose bit depth is 8 has a possible value of 2 8 or 16 million.


Image Resolution


The number of pixels displayed per unit of the printed length of an image is measured in terms of pixels per inch. In Photoshop you can change the resolution of the image. In Photoshop, the resolution and pixel dimensions depend on each other.


The amount of detail of the image depends on the pixel dimension, while the resolution of the image controls how much space the pixel is printed on. Will go Let us now give an example. You can change the resolution of the image without changing the actual pixel data in the image. You just need to change the printed size of the image.


On the other hand, if you want to preserve the same output dimension then A change in the resolution of an image demands a change in the number of pixels when printed, an image with a higher resolution than an image with a lower resolution Stores more and smaller pixels in size.


For example, a 1 * 1-inch image with a resolution of 72 PPI has 5184 pixels. The same image incorporates 90000 pixels when the resolution is 300 PPI. Generally, high-resolution images are more detailed than low-resolution images.


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