Stray radiation caused by scattering and diffusion that enters a remote sensor's field of view independently of the target is termed_________________?
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Answer: A. Reduces the contrast of the image and also its sharpness
Explanation
Atmospheric scattering introduces stray path radiance that washes out image details. This unwanted scattered light adds a uniform brightness that degrades overall image contrast. Reduced contrast directly impairs visual and automated edge sharpness across the scene. Rayleigh and Mie scattering redirect solar radiation into the sensor field of view. Path radiance represents photons reaching the sensor without interacting with ground targets. Atmospheric haze acts as a bright veil obscuring subtle ground reflectance differences.
Remote sensing scientists apply atmospheric correction algorithms to remove haze effects. Satellite images captured on hazy days exhibit washed-out colors and blurred linear features. High-altitude aerial photography requires specialized filters to minimize blue wavelength scattering impacts. Stray radiation never increases image contrast or enhances visual sharpness properties. Options suggesting increased sharpness contradict well-established atmospheric optics principles. Scattering degrades signal-to-noise ratios, directly reducing both contrast and boundary sharpness.
- Subject
- Engineering
- Category
- Civil Engineering
- Topic
- —
- Difficulty
- medium
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