CUSTOMER_CODE
SMUDE
DIVISION_CODE
SMUDE
EVENT_CODE
SMUJAN15
ASSESSMENT_CODE BT0077_SMUJAN15
QUESTION_TYPE
DESCRIPTIVE_QUESTION
QUESTION_ID
1593
QUESTION_TEXT
List and explain any ten graphic file formats.
SCHEME OF
EVALUATION
1. GIF (Graphic Interchange Format): GIF is an LZW-compressed
format designed to minimize file size and electronic transfer time. It
preserves transparency in indexed-color images. Doesn’t support alpha
channels.
2. JPEG (Joint Photographic Experts Group): Commonly used to
display photographic and other continuous-tone images in hypertext
markup language documents over the WWW and other online
services. It supports CMYK, RGB, and grayscale color modes and
doesn’t support alpha channels.
3. PNG (Portable Network Graphics): PNG supports 24-bit images
and produces background transparency without jagged edges. Some
web browsers don’t support PNG formats.
4. BMP (Bit Map Image): It is a standard Windows image format on
DOS and Windows compatible computers. It supports RGB, Indexed
color, grayscale and Bitmap color modes. Doesn’t support alpha
channels.
5. PDF (Portable Document Format): It is a flexible, cross-platform,
cross-application file format. It can contain electronic document search
and navigation features such as electronic links.
6. TIFF (Tagged Image File Format): It is used to exchange files
between applications and computer platforms. TIFF format supports
CMYK, RGB, Lab, indexed-color, and grayscale images with alpha
channels.
7. PICT Resource: It is a PICT file contained in a Mac OS file’s
resource.
8. PIXAR: This format is designed specifically for exchanging files
with PIXAR image computers.
9. PSD (Photoshop Format): It is the default file format for newly
created images and the only format supporting all available image
modes.
10. AVI (Audio Video Interleave): It is the standard Windows format
for audio/video data.
11. Filmstrip: This format is used for RGB animation or movie files
created by Adobe Premiere.
12. PCX: This format is used by IBM PC-compatible computers.
1 x 10 = 10 Mark
QUESTION_TYPE
DESCRIPTIVE_QUESTION
QUESTION_ID
73313
QUESTION_TEXT Briefly explain the various color models available.
SCHEME OF
EVALUATION
HSB (Hue, Saturation, and Brightness) Model: Hue is the color
reflected from or transmitted through an object. It is measured as a
location on the standard color wheel, expressed as a degree between 0º
and 360 º. Saturation is the strength or purity of the color measured as
a percentage from 0%(gray) to 100%(fully saturated). Brightness is the
relative lightness or darkness of the color measured as a percentage
from 0%(black) to 100%(white). (3 Marks)
RGB (Red, Green and Blue) Model: A large percentage of the
visible spectrum can be represented by mixing red, green, and blue
colored light in various proportions and intensities. Where the colors
overlap, they create cyan, magenta, yellow and white. RGB mode uses
the RGB model assigning an intensity value to each pixel ranging from
0(black) to 255(white). (2 Marks)
CMYK (Cyan, Magenta, Yellow, and Black) Model: It is based on
the light-absorbing quality of ink printed on paper. The pure cyan(C),
magenta(M), and yellow (Y) pigments are called subtractive and RGB
are called additive colors. Each pair of subtractive colors creates an
additive color and vice versa. In CMYK mode, each pixel is assigned a
percentage value for each of the process links. Pure white is generated
when all four components have values of 0%. 3 Marks)
L*a*b Model: L*a*b color consists of a luminance or lightness
component (L) and two chromatic components: “A” component (from
green to red) and the “B” component (from blue to yellow). (2 Marks)
QUESTION_TYPE
DESCRIPTIVE_QUESTION
QUESTION_ID
73318
QUESTION_TEXT
Explain JPEG (Joint Photographic Experts Group). List the important
features of JPEG Images.
SCHEME OF
EVALUATION
JPEG format is commonly used to display photographs and other
continuous-tone images in hypertext markup language documents
over the World Wide Web and other online services. (5 marks with
explanation)
important features of JPEG Images:
1. JPEGs use a lossy compression scheme.
2. JPEG images allow for various compression levels.
3. JPEG images are not interlaced, however, progressive JPEG
images can be interlaced.
4. JPEGs are saved with a .jpeg or .jpg extension.
QUESTION_TYPE
DESCRIPTIVE_QUESTION
QUESTION_ID
116670
Write note on:
a. primary colors
b .secondary colors
QUESTION_TEXT
c. analogous colors
d. complementary colors
e. tertiary colors.
Primary colors : its fine arts there are three primary colors Red, blue
and yellow. They are called primary colors. because they cannot be
created by mixing other colours. Primary form the basis for colour
theory or colour mixing. As using these three colours its impossible to
mix most other colors.
Secondary colours: A secondary color is a color mead by mixing two
primary colors together. Red and yellow to get orange, yellow and
blue to get green, or red and blue to get purple, the secondary colour
depends on the propotion in which you mix the two primaries.
SCHEME OF
EVALUATION
Analogous colors: analogous colors or related colors are that nearly
like one another and close together on the colors wheel. Such as
colours scheme formulates unity.
Complementary colors: the two colors of the opposite sides of the
color wheel, when placed next to each other make both appear
brighter.
Tertiary colors: tertiary colors are obtained by mixing a primary and
a secondary color together.