Velocity mismatch effect on the dynamic MTF of a TDI image sensor
| Autor: | Tang Yanfu, Li Junlin, Yang Yongqiang, Hongyu Li, Li Zhongming, Lan Taiji |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Time delay and integration
business.industry Image quality Computer science media_common.quotation_subject Dynamic imaging Acoustics Image processing 01 natural sciences Atomic and Molecular Physics and Optics 010309 optics Optics Sampling (signal processing) Optical transfer function 0103 physical sciences Contrast (vision) Electrical and Electronic Engineering Image sensor business Engineering (miscellaneous) media_common |
| Zdroj: | Applied Optics. 60:4191 |
| ISSN: | 2155-3165 1559-128X |
| DOI: | 10.1364/ao.419457 |
| Popis: | By analyzing the process of time delay integration dynamic imaging, we establish a model of velocity mismatch. Based on this model, we analyze the influence of different factors on the dynamic imaging process, and a modulation transfer function (MTF) is used to evaluate imaging quality. According to the simulation, the velocity mismatch and scan stage are the main factors for image quality. The MTF of the image sensor decreases with the velocity mismatch, and the scan stage increases. In addition, an image with higher contrast can be obtained in a short integration time. However, a shorter integration time leads to insufficient sampling. Furthermore, we establish a dynamic MTF testing system, and evaluate the experiment at different imaging modes. Through data comparison, the experimental data are consistent with theoretical data. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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