GCI30: a global dataset of 30 m cropping intensity using multisource remote sensing imagery
Abstract
The dynamic behavior of laser speckle caused by uniform in-plane motion of a diffuse object has been studied by deriving the cross-correlation functions of the complex disturbance and the intensity in the field where the speckle is observed. Expressions for the diffraction and image fields are calculated from general formulas for a linear coherent system. On the basis of these functions two characteristics of the dynamic behavior of speckle, a bodily translation and a gradual change in structure, are discussed quantitatively. The velocity of the translation and the rate of the structure change have been derived. As applications of the relations obtained, several methods have been proposed for measuring pattern correlations, MTF of imaging systems, in-plane velocity of diffuse objects, and eye accommodation state.
- Publication:
-
Optica Acta
- Pub Date:
- July 1977
- DOI:
- 10.1080/713819617
- Bibcode:
- 1977AcOpt..24..705Y
- Keywords:
-
- Dynamic Characteristics;
- Holographic Interferometry;
- Image Motion Compensation;
- Laser Applications;
- Optical Measurement;
- Speckle Patterns;
- Statistical Analysis;
- Cross Correlation;
- Diffraction Patterns;
- Modulation Transfer Function;
- Optometry;
- Lasers and Masers