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xuanwentao / New-Maximum-Distance-Analysis

Endmember Estimation Based on Geometric Distances for A Hyperspectral Image
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Where is the Endmember Number Estimation? #1

Open Jonahowns opened 7 months ago

Jonahowns commented 7 months ago

I have been attempting to use this code for a current project of mine involving the separation of chemicals from an FTIR measurement. The main goal I am trying to achieve is to estimate the number of endmembers. I am able to run your matlab scripts on the example data but am having trouble understanding the output. It seems that the program is given the number of endmembers (c=5) prior to being run, so I am unsure where the number of endmenbers is being estimated?

I feel like I might be missing something obvious, could you please explain how the program is supposed to be used?

Thank You!

xuanwentao commented 7 months ago

Hello,

It's Chinese New Year these days. I will reply to you later!

Bests,

Xuanwen

---- Replied Message ---- | From | Jonah @.> | | Date | 02/09/2024 17:17 | | To | @.> | | Cc | @.***> | | Subject | [xuanwentao/New-Maximum-Distance-Analysis] Where is the Endmember Number Estimation? (Issue #1) |

I have been attempting to use this code for a current project of mine involving the separation of chemicals from an FTIR measurement. The main goal I am trying to achieve is to estimate the number of endmembers. I am able to run your matlab scripts on the example data but am having trouble understanding the output. It seems that the program is given the number of endmembers (c=5) prior to being run, so I am unsure where the number of endmenbers is being estimated?

I feel like I might be missing something obvious, could you please explain how the program is supposed to be used?

Thank You!

— Reply to this email directly, view it on GitHub, or unsubscribe. You are receiving this because you are subscribed to this thread.Message ID: @.***>

Jonahowns commented 7 months ago

No problem! Have a good holiday!

Jonahowns commented 7 months ago

I just wanted to touch base regarding this issue. Your input or response on this matter would be greatly appreciated whenever you find the time. Please feel free to let me know if there's anything I can do to assist or if you need any further clarification on my question.

Thank you for your attention to this matter, and I look forward to hearing from you soon.

xuanwentao commented 7 months ago

Hello,

The number of endmembers can be obtained by observing the distance between any pixel and the specific plane. NMDA finishes the endmember extraction process when the maximum distance is zero. Therefore, c can be an estimated number of endmembers. For example, c can be 10 or other numbers.

All the best,

Xuanwen.

在 2024-02-22 03:51:14，"Jonah Procyk" @.***> 写道：

I just wanted to touch base regarding this issue. Your input or response on this matter would be greatly appreciated whenever you find the time. Please feel free to let me know if there's anything I can do to assist or if you need any further clarification on my question.

Thank you for your attention to this matter, and I look forward to hearing from you soon.

— Reply to this email directly, view it on GitHub, or unsubscribe. You are receiving this because you commented.Message ID: @.***>