Suppose a remote sensor records brightness levels in terms of digital numbers (DN) ranging from 0 to 255. The histogram of a scene recorded by the remote sensor shows the brightness values ranging from 60 to 158. A researcher wants to apply Linear Contrast Stretch to all the pixels in the scene. If DN' represents the transformed brightness level of a pixel and DN represents its recorded brightness level, which of the following expressions would be the most appropriate?

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Mathematics · Remote Sensing

Verified Solution4 OptionsUpdated: October 2026👁️1 View

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DN' = ( DN - 60 158 - 60 ) × 255

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Answer 1

DN' = ( DN - 60 158 - 60 ) × 255

Answer 2

DN' = ( DN - 158 158 - 60 ) × 255

Answer 3

DN' = ( DN - 158 DN - 60 ) × 255

Answer 4

DN' = ( DN - 60 DN - 158 ) × 255

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