This my style so please forgive me for my tastes!

1. Lesson 3

2. 
At the end of this lesson, you should be able to:
 Define graphics;
 Give examples of graphics;
 Compare bitmap image to a vector image; and
 Save images from the web.
Objectives

3. 
 What are graphics?
 How do you save images from the Internet?
Do you know…

4. 
A graphic or graphical image refers to digital images,
such as drawings, charts, or photographs.
Graphics help create a mood, establish a visual style,
and convey messages. Graphs, charts, and diagrams are
good for putting across complex and detailed information,
while photographs and illustrations are good at implying a
feeling or style. Many individuals find numerical
information easier to understand when placed in a chart or
graph form. Photographs convey a sense of realism.
Artistically treated photographs and illustrations can imply
a mood or impression.
Let’s find out!

5. 
The web contains countless images about a
variety of subjects. You can download many of these
images at no cost and use them for non-commercial
purposes. For example, you can add images into
greeting cards, projects, and other documents.
Some websites use thumbnails on their pages
because graphics can be time-consuming to display. A
thumbnail is a small version of a larger graphic. You
usually click a thumbnail to display a larger image.

6. 
Examples of graphics

7. 
Most images on the web come in two file
formats: JPEG or GIF. JPEG, which stands for Joint
Photographic Experts Group, is a format that compresses
graphics to reduce their file size, which means the files
takes up less storage space. Smaller file sizes result in
faster downloading of the web pages because small
files transmit faster than large file. All images under
this format have file extension of .jpg.

8. 
GIF stands for Graphic Interchange Format. All
images under this format have the file extension of .gif.
This format is the most commonly used image format
on the web and includes features that enable
background transparency and animation.

9. 
There are many images on the web that you can
use in your own web pages, presentations, documents,
and research pares. You can save these images
individually in your own computer. You can create a
separate directory for all your images and call it
something like Download and then create a
subdirectory called Images. This way you know where
all the images that you have downloaded from the
web.
Saving Images from the
Web

10. 
 Place your cursor over the graphic.
 Click your right mouse button. A pop-up box
appears.
 Select the place where you want to save the image
and the click Save.
 You can accept the current file name or rename the
file.
To save an image:

11. 
Application software often include a clip art/ image
gallery which is a collection of clip arts and photographs.
Some applications have links to additional clips available on
the web. You can also purchase clip art/image gallery
software that contain thousands of images.
In addition to clip art, many clip art/image galleries
provide fonts, animations, sounds, video clips, and audio
clips. You can use the images, font s and other items from
the clip art/image gallery in all types of documents,
including word processing, desktop publishing,
spreadsheet, and graphics presentation.
Clip Art/ Image Gallery

12. 
Examples of Clip
Art/Image Gallery

13. 
Screen capture involves, as the name suggests,
capturing the image of the entire screen. To do this,
simply press the Print Screen button on the key board.
You will then paste the copied screen into the
application of your choice, as such in a word document
or in a presentation.
Making Screen Captures

14. 
Everywhere you look, people are capturing
moments they want to remember. They take pictures of
their birthday parties, weddings, and other activities.
Because of the popularity of digital cameras,
increasingly more people want to capture their
moments digitally, instead of on film.
Digital Photography

15. 
With digital technology, you have the ability to
modify and share the digital images you create. You
can also copy, manipulate, print, and distribute digital
images using your personal computer and the Internet.
With digital cameras, no developing is needed.
Instead, the images are stored media, such as a hard
disk, DVD, or flash memory card. Unlike film, storage
media can be reused, which reduces cost, saves time,
and provides immediate results.

16. 
Digital technology allows greater control over
the creative process. You can check results immediately
after capturing a picture to determine whether it meets
your expectations. If you are dissatisfied with the
picture, you can erase it and recapture it, again and
again.

17. 
One popular type of image editing software,
called photo editing software, allows users to edit digital
photographs by erasing blemishes, restoring old
photographs, adjusting or enhancing image colors, and
adding special effects, such as shadows and glows, or
creating electronic photo albums. You can print edited
photographs on paper or post them on the web.

18. 
Graphic artists, multimedia professionals, technical
illustrators, and desktop publishers use paint software and
image editing software to create and modify graphical
images, such as those used in publishing documents and
web pages. Paint software, also called illustration software,
allow users to draw pictures, shapes, and other graphical
images with various onscreen tools, such as pen, brush,
eyedropper, and paint bucket. These product also include
many templates to assist you in adding an image to
documents, such as greeting cards, banners, calendars, signs,
labels, and business cards.
Paint/Draw Software

19. 
The graphics that you see in multimedia
programs and many that you see in print have been
created or manipulated in a computer in a digital
format. There are two basic formats of computer
graphics: Bitmap or Vector
KINDS OF GRAPHICS

20. 
A bitmap graphic is a piece of art that has been
stored as a pattern of dots called pixels. A pixel, short
for picture element, is one dot in a grid. A picture that s
produced on the computer screen or on paper by a
printer is composed of thousands of these dots. Just as a
bit is the smallest unit of information a computer can
process, a pixel is the smallest element that can display
or that print hardware and software can manipulate in
creating letters, numbers, or graphics. For example, a
letter A shown here is actually made up of a pattern of
pixels in a grid.
Bitmap Graphics

21. 
Bitmap graphics can also be produced from
digitizing art, pictures, or photographs, by passing the
artwork through a scanner. A scanner is a hardware
device that converts line and shading into combinations
of the binary digits 0 and 1 by sensing different
intensities of light and dark. The scanner shines a beam
of light on the picture being scanned. The beam passes
back and forth across the picture. Scanned pictures are
bitmap pictures and have jagged edges.

22. 
The jagged edges are caused by the individual
pixels that create the picture. Bitmap graphics are also
known as raster images. Additionally, bitmap files
cannot be ungrouped into smaller object groups.

23. 
Bitmap graphics are defined by their dimensions
in pixels, as well as by the number of colors they
represent. For example, a 640 x 480 image contains 640
pixels horizontally and 480 pixels vertically. If you
enlarge a small area of a bitmap image, you can clearly
see the pixels that are used to create it. When viewed
normally, the small pixels merge into Using 24-bit
color, each pixel can be set to any of the 16 million
colors. Bitmap graphics have .bmp as file extensions.

24. 
A vector graphic is a piece of art that has been
created by a drawing program, such as CorelDRAW or
AutoCAD. Vector graphics are widely used in
computer/aided design (CAD) programs to create
detailed engineering and design drawings that have
become popular in multimedia.
Vector Graphics

25. 
Vector graphic objects are created as a collections
of lines instead of patterns of individual pixels. Vector
graphic files store data either as picture descriptions or
as calculations. These files describe a picture
mathematically as a set of instructions for creating the
objects in the picture. These mathematical descriptions
determine the position, length, and direction in which
the are to be drawn.

26. 
These calculations allow the drawing program to
re-create the picture on the screen. Because vector
graphic objects are described mathematically, they can
be layered, rotated, and magnified easily. Vector
graphics are also known as object oriented pictures.
Clip art pictures in the Microsoft Clip Gallery that have
the file extension .wmf are examples of v vector files.
Vector files can be ungrouped and manipulated by
their component objects.

27. 
Vector graphics retain their quality when enlarged, while bitmaps
do not. Look at the illustrations below.
Vector Circle Bitmap Circle

28. 
 What are graphics?
 How do you save images from the Internet?
Any answers?
A graphic or graphical image refers to digital images,
such as drawings, charts, or photographs.
Place your cursor over the graphic. Then click your right
mouse button. A pop-up box appears, select the place
where you want to save the image and the click Save.
You can accept the current file name or rename the file.