Medical Multimedia Course
40 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the most common frame rate used in film production?

  • 30 fps
  • 60 fps
  • 24 fps (correct)
  • 25 fps

What type of sensor is used to convert light into an electronic signal in a video camera?

  • CCD (correct)
  • GPU
  • CPU
  • LED

How is analog video typically represented?

  • As a continuous time-varying signal (correct)
  • As a series of still images
  • As a digital waveform
  • As a sequence of digital images

What determines the resolution of analog video?

<p>Number of horizontal scan lines (A)</p> Signup and view all the answers

What is the main difference between television signals and computer signals?

<p>Scanning system (B)</p> Signup and view all the answers

What is the purpose of sampling in digital video?

<p>To represent the visual scene digitally (A)</p> Signup and view all the answers

What is the main characteristic of digital video?

<p>Represented as a sequence of digital images (B)</p> Signup and view all the answers

What is the frame rate used in high-definition TV?

<p>60 fps (C)</p> Signup and view all the answers

What is one of the advantages of digital representation for video?

<p>Direct access, which makes nonlinear video editing simple (B)</p> Signup and view all the answers

What is the purpose of an Analog to Digital Converter (ADC) in digital video?

<p>To convert analog video signals into digital format (A)</p> Signup and view all the answers

What determines the number of bytes required to represent a digital video file?

<p>Resolution and color encoding (A)</p> Signup and view all the answers

What is the purpose of a Video Capture Card (VCC) in digital video?

<p>To convert analog video signals into digital format (C)</p> Signup and view all the answers

What is digital video composed of?

<p>Graphics and audio (D)</p> Signup and view all the answers

Why is digital video easy to edit?

<p>Because it can be processed and integrated into various multimedia applications (C)</p> Signup and view all the answers

What is the role of a Digital to Analog Converter (DAC) in digital video?

<p>To convert digital video signals into analog format (C)</p> Signup and view all the answers

What property of digital video determines how many frames are displayed per second?

<p>Frame rate (B)</p> Signup and view all the answers

What is the purpose of interlacing in analog video scanning?

<p>To reduce flicker and eye strain (D)</p> Signup and view all the answers

How are the scan lines arranged in interlaced scanning?

<p>With a small gap between lines, due to a small voltage (C)</p> Signup and view all the answers

What is the term for the jump from Q to R in the interlaced scanning process?

<p>Horizontal retrace (D)</p> Signup and view all the answers

How does progressive scanning differ from interlaced scanning?

<p>Progressive scanning paints the image in one pass from top to bottom (A)</p> Signup and view all the answers

What is the disadvantage of progressive scanning?

<p>It requires more bandwidth (A)</p> Signup and view all the answers

What is the purpose of the YUV color model?

<p>To transmit TV signals (A)</p> Signup and view all the answers

What is the function of the luminance (Y) component in the YUV color model?

<p>To represent the brightness of the image (B)</p> Signup and view all the answers

What is the term for the combination of two fields in analog video scanning?

<p>Frame (A)</p> Signup and view all the answers

What determines the brightness of the color in the YUV color model?

<p>Y component (A)</p> Signup and view all the answers

What is the range of Y in digital formats?

<p>0 to 255 (D)</p> Signup and view all the answers

What is the axis from blue to yellow in the YUV color model?

<p>U axis (D)</p> Signup and view all the answers

What is the purpose of subsampling in video transmission?

<p>To reduce the bandwidth (B)</p> Signup and view all the answers

What is the result of experiments with the human visual system on video signals?

<p>An acceptable quality of video for broadcast (A)</p> Signup and view all the answers

What is the process of keeping the luminance untouched and subsampling the chrominance?

<p>Chrominance subsampling (C)</p> Signup and view all the answers

What is the purpose of YUV color model in video broadcasting?

<p>To reduce the bandwidth for transmission (C)</p> Signup and view all the answers

What is the result of subsampling in video signals?

<p>A variety of subsampling ratios (D)</p> Signup and view all the answers

What is the primary purpose of using video in multimedia?

<p>To deliver multimedia effectively (A)</p> Signup and view all the answers

Which of the following statements is true about a video image or frame?

<p>It is a 2-D projection of a 3-D scene (C)</p> Signup and view all the answers

What performance demand does video place on a computer?

<p>Highest demand on memory and storage (A)</p> Signup and view all the answers

How does digital video compare to analog video in terms of cost and quality?

<p>Digital video produces high-quality products at a lower cost (B)</p> Signup and view all the answers

What illusion is created by the sequential display of video frames at a certain speed?

<p>Movement (D)</p> Signup and view all the answers

What process does video technology NOT involve?

<p>Improving textual document readability (C)</p> Signup and view all the answers

Which one of the following is NOT a characteristic of a 2-D video representation of a 3-D scene?

<p>It includes depth information (C)</p> Signup and view all the answers

Which of the following is a major benefit of digital video over analog video?

<p>Better integration with multimedia (D)</p> Signup and view all the answers

More Like This

Use Quizgecko on...
Browser
Open
Browser
Browser