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Name:
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Viridiana
Arreguin
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Student
Number:
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2
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GIMP: Chapter 2: Improving Digital
Photos
PART
1: READ Chapter 2 in
the GIMP book, then:
1.
Answer
all questions below, briefly but completely.
2.
Change the color of the answer to BLUE.
3.
Copy
this information and paste in a new post in your DIGITAL GRAPHICS blog.
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1. What happens to an
image when you SCALE it? Does the canvas size change when you SCALE an image?Scale is a tool used to make a image bigger or smaller. In
Gimp when you scale an image the canvas size also changes.
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2. Why should you
scale images you take on a digital camera before sending them in email
or posting them on the web? You should scale a
picture before you send it because most likely it will be way to small to see
in the email.
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3. Why is it important
to make sure the width and height of an image you are going to scale are
linked together? How do you do this in GIMP? It
is important because if you don't your image will be uneven
and disproportional. When you go to scale you make sure the chain links
are together.
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4. What is the
keyboard shortcut to UNDO? Ctrl+z
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5. What does the SCALE
TOOL do? It scales just that one layer not the
whole picture.
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6. What is the
difference between the IMAGEàSCALE from the menu and the SCALE TOOL? The IMAGE-->SCALE will scale the whole picture
while the scale tool only does one layer at a time.
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7. Describe these JPG
quality settings:
· Optimize: Gives you an additional reduction in file size.
· Progressive: This lets people see a picture were it starts as poor
quality then it gradually gets better.
· Save EXIF data: This gives you the option to save and edit the information
about the date the photo was taken, the resolution, and the camera settings.
· Comment: Is were you would put any other information you want
people to know about the image.
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8. Why would you
decrease the quality setting of a JPG image? You
might want to decrease the quality for a certain look.
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9. Compare the size of
a 95% quality setting to a 100% setting of a JPG image: You will get a picture two or three times bigger with a
100% then with a 95%
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10. If you save a JPG
file at 100%, do you preserve ALL the data in the image? What formats should
you use if you want to preserve all the data? You do
not save all your data with jpeg. to save all the data you should save with a
PNG ot TIFF.
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11. Describe what it
means when you INDEX a file such as a GIF or PNG file. You change the file from RGB to ether GIF or PNG.
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12. What is RGB color
mode? It uses a mix of Red, Green, and Blues to
make new colors.
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13. What is dithering? Combining pixels of several different colors.
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14. What is grayscale
mode? Makes black-and-white photos.
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15. What does
interlacing a file do? It makes a file load in
a different way.
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16. What is cropping? Cropping is cutting around an image until it is just what
you want.
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Briefly
describe these graphic file types:
NOTE: It is important to learn these types of files to be a
proficient graphic artist, so pay attentionwhen you describe
these file types.
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1. JPEG: For sharing full-color photographs.
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2. GIF: It uses a fixed set of colors instead of encoding all the
colors.
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3. PNG: It can be used like a JPG or a GIF
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4. XCF: This saves your GIMP projects in layers so you can work on
them.
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5. TIFF: A full color, non-lossy format
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6. Raw: Used by camera manufacturers.
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7. BMP: Very big and dont offer any advantage over PNG or TIFF.
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8. PSD: This is Adobe's Photoshop format.
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9. ICO: It can contain several resolutions within one file.
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10. PDF: Vector graphics format.
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PART
2: GIMP PROJECT:
Be sure to save these images in your
GIMP folder before inserting them in this document.
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2. Look through the
menus on the left to see the supplemental information provided for you about
the book.
3. Click on the PHOTOS
FROM THE BOOK link, and scroll down to see the images for Chapter 2.
4. Download and save
these images: Red Rock Canyon (the 4th image), Canyonlands (5th image),
American kestrel (the bird), Ethan (the little boy).
5. With the Red
Rock Canyon image, apply the following color techniques as indicated
in the textbook on pages 38-50 (try dragging the sliders in
each dialog box to see how they change the image, then UNDO to restore the
image back to the original), then DESCRIBE what each does:
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· Brightness-Contrast: They make the image brighter or darker
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· Levels: It makes it look like it is really dark where they
are, or really bright.
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· Curves: You can move the lines around to make it look very
original color wise.
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· Threshold: It pixel-ates it to make it look black and white and old.
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· Desaturation: It makes it black and white.
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6. When you have
applied these techniques to the Red Rock Canyon image, apply
THRESHOLD to the image, save it, then insert it here:
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7. With the Canyon lands image,
use Rotation to adjust the image as indicated on pages
51-55. Save the rotated and insert here:
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8. With the Kestral image,
use the Sharpening techniques indicated on pages 55-59. Save
the sharpened image and insert here:
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9. With the little
boy, Ethan, image, correct the Red-Eye as
indicated on pages 61-66. Save the corrected image and insert here:
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