Time effects on near-infrared imaging for detecting bruises on apples

Bruce L. Upchurch; James A. Throop

doi:10.1117/12.144037

12 May 1993 Time effects on near-infrared imaging for detecting bruises on apples

Bruce L. Upchurch, James A. Throop

Proceedings Volume 1836, Optics in Agriculture and Forestry; (1993) https://doi.org/10.1117/12.144037
Event: Applications in Optical Science and Engineering, 1992, Boston, MA, United States

Abstract

Imaging in the near-infrared region has been used frequently to detect bruises on `Delicious' apples. Pixel intensities from bruised and nonbruised regions within an image of an apple are compared to characterize the time effects. Near-infrared reflectance from a bruised site is generally lower than the reflectance from a nearby nonbruised region. This difference usually reaches a maximum 24 hours after inducing the bruise. As the bruise ages in storage, reflectance from the bruised region increases. The reflectance continues to increase and eventually exceeds the reflectance from a nonbruised region.

Citation Download Citation

Bruce L. Upchurch and James A. Throop "Time effects on near-infrared imaging for detecting bruises on apples", Proc. SPIE 1836, Optics in Agriculture and Forestry, (12 May 1993); https://doi.org/10.1117/12.144037

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