Some anomalies occured when using Polymer4.13 on OLCI
Posted: Fri Apr 16, 2021 1:11 am
Hello fsteinmetz!
Some blocky and striped anomalies appear when using Polymer4.13 on OLCI. These anomalies seem to usually occur in turbid waters. I displayed the results in the figure and marked them with a black box. I would like to ask what caused this phenomenon. Can I avoid it by adjusting some parameters? At present, my parameters are all using the default. In addition, I also used C2RCC to process the same image, and found that the difference between the two algorthms is quite large, both in clean (like Sea of Japan, Ploymer seem to be the larger one) and turbid(off-shore, Polymer is alwaye the smaller one) waters. I made sure that both displays use the same scale and both display water leaving reflectances at 510nm. Regards,
tian
Some blocky and striped anomalies appear when using Polymer4.13 on OLCI. These anomalies seem to usually occur in turbid waters. I displayed the results in the figure and marked them with a black box. I would like to ask what caused this phenomenon. Can I avoid it by adjusting some parameters? At present, my parameters are all using the default. In addition, I also used C2RCC to process the same image, and found that the difference between the two algorthms is quite large, both in clean (like Sea of Japan, Ploymer seem to be the larger one) and turbid(off-shore, Polymer is alwaye the smaller one) waters. I made sure that both displays use the same scale and both display water leaving reflectances at 510nm. Regards,
tian