1 / 15

Bitmap vs. Vector

Objective 1. Bitmap vs. Vector. Bitmap vs. Vector Graphics. Computer graphics falls into two main categories: Bitmap images Vector images. Bitmap images. Created using a square or rectangular grid of colored squares called pixels.

logan-irwin
Download Presentation

Bitmap vs. Vector

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Objective 1 Bitmap vs. Vector

  2. Bitmap vs. Vector Graphics • Computer graphics falls into two main categories: • Bitmap images • Vector images

  3. Bitmap images • Created using a square or rectangular grid of colored squares called pixels. • Pixels: tiny dots of individual color that makes up what you see on your screen. Tiny dots come together in the form of the images you see. • When the image is enlarged, you can see each individual square dot of color. • The number of pixels in a given inch are referred to as the image’s resolution.

  4. Bitmap images • Bitmap images are resolution dependent. • Resolution: # of pixels in an image. • Stated in: • Dpi (dots per image) • Ppi(pixels per image) • Its difficult to increase or decrease the size of an image without sacrificing a degree of image quality. • Reducing the image: throws away pixels. • Increasing the image: creates new pixels.

  5. Common Bitmap formats • .bmg • .gif • .jpg • .tiff • .psd

  6. Popular Bitmap imaging software • Microsoft Paint • Abobe Photoshop • Corel Photo-Paint

  7. Bitmap images • All scanned images are bitmap • Digital camera images are bitmap • Images can be converted from one format to another.

  8. Vector images • Graphics created in Adobe Illustrator are vector graphics. • Made up of many individual, scalable objects. • Objects indentified by mathematical objects rather than pixels. • Always render the highest quality. • Objects consist of: • Lines • Curves • Anchor points/paths • Shapes with editable attributes: such as color, fill, and outlines.

  9. Vector images • Changing the attributes of a vector object does not affect the object itself. • Freely change any # of object attributes without destroying the basic object. • Vector images are resolution independent. • Increase or decrease the size to any degree and your lines will remain crisp and sharp on screen and print.

  10. Vector images • Fonts are a type of vector object. • Vector images are not restricted to a rectangular shape like bitmap images. • Used to create logos • Disadvantage of vector images: unsuitable for producing photo-realistic imagery. • Vector graphics are termed resolution-independent • This means that any graphic that you create in Illustrator can be output to fit on a postage stamp or on a billboard.

  11. Vector image formats: • AI (Adobe Illustrator) • CDR • CMX

  12. Popular Vector Drawing Software • Adobe Illustrator • CorelDRAW • XaraXtreme • Serif DrawPlus

  13. Two categories of Graphic Software • Image editors (pixel/bitmap based) • Illustration software (vector-based)

  14. Image Editors • Most popular type of graphics software • Also known as paint applications • Allows you to create bitmap-based images from scratch using a variety of painting tools intended to mimic natural painting tools. • Most image editors include features for photo enhancement and retouching • Advantage: you can get a great deal of detail, as much as a photograph. • Disadvantage: confined by the pixel resolution of the image.

  15. Illustration software • Because they consist of points and objects rather than pixels on a grid, they are free from the confines of pixel resolution. • Cannot contain the high level of detail as bitmapped images so they often have a cartoon-like appearance. • Most often used to create stylized, cartoon-like images, logos, maps, and other design elements that need to be output at any size.

More Related