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Guide to Defining Video Quality Requirements

Revised January 11, 2012
Section 7 of 9 of step 2 -- Generalize Use Cases into Use Classes -- in the bar chart highlighing the 4-step process for definfing video quality requirements.

Lighting Level

Definition

Specifies the level of lighting you anticipate in a scene of interest.


Lighting example: Bright
Task: Facial Recognition.

Lighting levels can vary from very dark (nighttime, indoors) to very bright (daylight, spotlight), affecting the ability of the camera to capture the image.


Lighting example: Dim
Task: Facial Recognition.

The presence of both very bright areas and very dark areas in the frame simultaneously is known as high dynamic range, and can impair target recognition, as the figure shows.


Lighting example: Variable
Task: Facial Recognition.

Lighting level is an obvious aspect that impacts selection of video equipment and refers to light available to illuminate the scene of interest.

Scene Content

Lists lighting level consideration, scene, and content information.

 

Button advances to the previous step in the process for determining video requirement recommendations. Button advances to the next step in the process for determining video requirement recommendations.

 


Jumps to use case page. Jumps to use classes page. Jumps to the video system tasks page. Jumps to the video system functions page. Jumps to the recommendations tool for video requirements.