H. Huang's research while affiliated with Michigan State University and other places

... Alternatively, another image preprocessing function could be incorporated into the AS model that would permit the inputting of satellite images which are larger and therefore contain more context, with an automatic feature to create bounding boxes for the burned areas. Artificial intelligence models with similar abilities have been developed in applications aimed at the detection of objects in satellite images (see, e.g., Qian et al. (2020), Sharma et al. (2021) or Martins et al. (2022)). The improvement in performance attained by an AS model with these capabilities is potentially greater than that achieved by simply inputting additional contextual area, as was observed in the results presented here. ...

... Fifthly, PlanetScope images are acquired using many small satellites, belonging to difference generations, rather than a single large platform like Sentinel-2 and Landsat. Therefore, radiometric and geometric corrections of these products are not always compatible across generations of satellites, and does not always match the standard requirements expected by the remote sensing community [29,30]. Last but not least, similar to other optical satellite platforms, cloud cover can be a significant problem with PlanetScope satellites, especially over tropical regions where cloud contamination is normally very high during several months in a year [31]. ...

... Differences in spectral separability performance for targets after wildfire events were observed by Lasaponara [62] and Pacheco et al. [31]. The separability estimates shown in Figure 2 are similar to those based on examining data from polar-orbiting satellites [63]. Thus, Lasaponara [62] suggested that these observations may be due to the different types of land cover affected by the fire. ...

... It was geo-referenced using UTM projection (Zone 39N), WGS84 datum, and several GCPs. The achieved geometric registration precision is better than 1.5 m (0.15 pixel), corroborating the results reported by Yan et al. [17]. ...

... Bidirectional reflectance distribution function (BRDF) correction is performed to account for changes in view and illumination angle effects. Parameters for adjusting reflectance to nadir BRDF-adjusted reflectance are retrieved from a global set of Moderate Resolution Imaging Spectroradiometer (MODIS) BRDF kernel parameters (Roy et al., 2017a, Roy et al., 2017b, Roy et al., 2016. ...