Deep Learning Detecting Swimming Pools

NathanJennings — Sat, 18 Apr 2020 00:02:20 GMT

I have been working through my own version of detecting swimming pools.

I have use the same imagery (albeit, a subset) used by ESRI.

I think I have taken reasonable training sites. I have tried to be meticulous with selecting training sites. The ones I choose seem similar to those found in the ESRI examples.

I have used the same (and different parameters for training the model and detecting objects). I have taken the defaults, added values shown in ESRI examples, and tried some of my own options for parameters such as:

image tile, stride size

grid, scaling, ratio

padding, threshold, etc

epochs

The "learning curve" has shown concave to "jagged" (which I believe means, overfitted). Like I mentioned, I have tried this scenario numerous times with the different combinations of parameters for both training and detecting.

I am no where close to successfully detecting swimming pools. I mostly get features other than pools.

I am attaching my PPKX with the training and detected objects (and the image), about 23 Mb. I do have a model zip file, but it is approx. ~200 Mb, so it may be too large. I am attaching the EMD file and the PNG that shows the loss curve. This is one is jagged. 25 epochs.

The attachment has about 15 sample sites, but I have done this same process using a larger image and approx. 80 samples that I think are "good" samples of swimming pools...same kind of results.

If anyone can provide some suggestions or guidance, I would like to successfully attempt to find swimming pools....and then work with detecting other kinds of features.

I am using an XPS Dell business machine. Pro 2.5. I have the deep learning framework installed. No GPU or NVIDIA card. I can successfully run the full process, but the results are very bad.

I have viewed and use: Deep Learning: Detect swimming pools as a guide in addition to the ESRI help and other ArcGIS.learn notebooks and other information provided by ESRI.

Thank you for any insight or let me know if I should be contacting someone else at ESRI. I would also like to know if there is a process to go through to logically attempt different parameter values that can improve both training and detecting results.

Nate

topic Deep Learning Detecting Swimming Pools in ArcGIS Image Analyst Questions

Deep Learning Detecting Swimming Pools