1.A VGA image size is 640 pixels by 480 pixels. If there are 16 high contrast levels of gray, the number of bytes required to store this image is:
A1.2288 MB
B2.458 MB
C153 KB
D307 KB
2 In a PN photodiode, a photon absorbed in the depletion region of the junction:
A generates donors.
B generates only electrons electrons.
C generates only holes..
D generates a hole-electron pair.
3.How many bits are used for a pixel for a full RGB color image?
A 24-bit RGB color image
B 16-bit RGB color image
C 4-bit RGB color image
D 8-bit RGB color image
4.Which of the following color models are used for color display on a monitor?
A CMYK
B RBY
C RGB
D CMY
5.________ is a type of file compression that compresses images by reduction of the number of bits for high frequency changes. Therefore, each time an image is compressed, it loses quality.
A PNG
B JPEG
C ZIP
D GIF
6 Digital video is sequence of ________________.
A frames
B pixels
C bytes
D compressions
7.Information ignored by the human eye is _________________,
A.unobservable
B irrelevant information
C temporally redundant
D spatially redundant
8.A simple way to compress an image is by removing __________________.
meaningful data
superfluous data
moire pixels
alternate pixels
9.A picture size option on a digital camera is 2000 x 2800 RGB pixels. Prior to compression
with JPEG, how many bytes are stored in the memory on the camera?
A. 44.8 MB
B. 24 B
C.16.8 MB
D.134.4 MB
10.The most familiar single sensor used for image acquisition is
A. CMOSFET
B. npn phototransistor
C. pn photodiode
D .CMOS amplifier