Name:
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Jessica Stephens
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Student Number:
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X00147734
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GIMP:
Chapter 2: Improving Digital Photos
PART
1: READ Chapter 2 in the GIMP book, then:
- Answer
all questions below, briefly but completely.
- Change
the color of the answer to BLUE.
- Copy this information and paste
in a new post in your DIGITAL GRAPHICS blog.
1.
What
happens to an image when you SCALE it? Does the canvas size change when you
SCALE an image?
It makes the image smaller but doesn’t change canvas size
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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?
Digital cameras take HD photos which are very large files.
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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?
Keep image from becoming skinnier or wider. You use the
chainlink icon to link.
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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?
Scales current layer instead of whole image.
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6.
What
is the difference between the IMAGEàSCALE from the menu and the SCALE TOOL?
Scales current layer
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7.
Describe
these JPG quality settings:
·
Optimize
·
Progressive
·
Save
EXIF data
·
Comment
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8.
Why
would you decrease the quality setting of a JPG image?
Reduce file size
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9.
Compare
the size of a 95% quality setting to a 100% setting of a JPG image:
95 is about two to three times smaller in file size
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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?
No. A PNG or TIFF file.
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11.
Describe
what it means when you INDEX a file such as a GIF or PNG file.
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12.
What
is RGB color mode?
Full-color Image.
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13.
What
is dithering?
Combines pixels of several colors.
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14.
What
is grayscale mode?
Removes color other than black or white
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15.
What
does interlacing a file do?
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16.
What
is cropping?
Taking only a select section of an image
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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 attention when you describe these
file types.
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1.
JPEG
Joint Photographic Experts Group. Full color
photos.
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2.
GIF
Graphics Interchange Format. Indexed format.
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3.
PNG
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4.
XCF
GIMP’s own format
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5.
TIFF
Tagged Image Format.
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6.
Raw
Encompasses all various proprietary formats used
by camera manufacturers.
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7.
BMP
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8.
PSD
Adobe Photoshop’s format.
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9.
ICO
Mircosoft Windows format.
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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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·
Levels:
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·
Curves:
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·
Threshold:
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·
Desaturation:
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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 Canyonlands 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 Canyonlands image, use Rotation
to adjust the image as indicated on pages 51-55. Save the rotated and insert
here:
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9.
With
the Kestral image, use the Sharpening
techniques indicated on pages 55-59. Save the sharpened image and insert
here:
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10.
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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