manipulating images
Post on 23-Feb-2016
69 Views
Preview:
DESCRIPTION
TRANSCRIPT
Manipulating Images
Image
• A visual representation of something that is seen in real life.• It can be two-dimensional or
three-dimensional
Graphics
• Is the process by which a computer displays images or digital images• Also used to refer on images
Different Image File Formats
• Vector Graphics• Raster Graphics• Meta format images
Vector Graphics
• Is composed of mathematical formulas that represent images. They are not dependent on their original resolution
• Are flexible enough to be scaled in many different ways without affecting their final resolution.
• Best used for illustrations and drawings• saved as EPS, WMF, AI, CDR or SVG
Example of a Vector Image
Raster Graphics
• Also known as “bitmapped graphics”• Are image information rendered as Picture
Elements (Pixels)• Are highly dependent on their original
resolution• Image quality lessens when the image is
resampled to a lower resolution.• Saved as BMP, JPEG, PNG, TIFF or GIF
Part of a Raster Image
Vector vs Raster
Meta Format Images
• File format that accommodates both vector and raster information.• Example are Clip Art files
File Formats
• JPEG or JPG• GIF• PNG• TIFF• BMP
JPEG
• Joint Photographic Experts Group• Lossy Compression• Compresses grayscale and color
information but allows image to be displayed in 16,000,000 colors.
Original file
JPEG Compressed File
JPEG Compressions of varying levels
GIF
• Graphics Interchange Format • Lossless Compression• Preferred for images with only few colors like
black and white images• Allows 256 colors• Supports animations
GIF compresses images in two ways: 1. By reducing the number of colors in rich color images, thus reducing the number of bits per pixel.
2. GIF replaces multiple occurring patterns (large patterns) into one. So instead of storing five kinds of blue, it stores only one blue.
GIF animation
PNG
• Portable Network Graphics• No animation capability• Image format specifically designed for the
web• A file format that takes off from the
transparency capabilities of GIF• Developed due to GIF’s licensing agreement
TIFF
• Tagged Image File Format• Large file size• Very flexible format, it supports several
types of compression like JPEG, LZW, ZIP or no compression at all.
• High quality image format, all color and data information are stored
• TIFF format can now be saved with layers
BMP
• Bitmap• Does not scale or compress well• Again, very huge image files making it not
web friendly• No real advantage over other image formats• Works well with most Windows programs and
OS, you can use it as a Windows wallpaper
Guides to Effective Visual Communication
▪ Directness▪ Efficiency▪ Contextualization▪ Organization▪ Relevancy▪ Underscoring▪ Maximizing
Directness
-message should be straightforward and clear
Efficiency
-Strive for efficiency when communicating an idea
-There is a danger that point of information will be lost in a jumble of text effects, pictures and colors
Contextualization
-introduce the reader to the content through visuals
Organization
-Follow the structure which starts with an introduction, then the body and ends with conclusion
Relevancy
- Use contents which are related to each other
Underscoring
- create sub-elements which enhances the emphasis on a particular data
Maximizing
-incorporate graphics and data together with the text for the greatest impact.
What is a report?
A document containing information organized in a narrative, graphic, or tabular form, prepared on periodic, recurring, regular, or as required basis.May refer to specific periods, events, occurrences, or subjects, and may be communicated or presented in oral or written form.
http://www.businessdictionary.com/definition/report.html#ixzz2sV9fqHxP
Creating a Report
• Title Page• Content Page Adding images
Title Page
• Must be attractive• Has strong impact on the viewer• Establishes the theme of the
report
Content Page
• Use headers and footers• Add page background
Hands-on 31. create a report about one of the following:
magic photographysports global warming
2. Page size 11” x 17” (tabloid portrait)3. Add graphics, text effects and color4. Filename: 7T_LASTNAME_H3Cite your references
top related