Ground sampling distance, label format, camera specs and other questions

[diogo-aos]

Hello! Thank you for making this dataset available. I have some questions which I have not found clarified in this repo or your paper.

1. What is the approximate ground sampling distance of query images (in each height) and the satellite images?
2. In the images where the location label consists only of @longitude@latitude@.png, is that for the top-left corner?
3. What are the camera specs? Could you share the intrinsics?
4. Are the query images rectified?

[hmf21]

Hi @diogo-aos,
Thanks for your questions

1. About 250m
2. It is the label of the image which can be regarded as coordinates of the center point.
3. The camera is FLIR BFS-U3-31S4C-C and the intrinsics can be refered in https://drive.google.com/drive/folders/1jBTVkU-Juvvf4py8laAY_AD0L3mJD82f?usp=drive_link
4. No, the given images are the raw images.

[diogo-aos]

Thank you for the quick reply. The 250m are roughly for the entire tile?

…

On 27 May 2025 12:39:56 WEST, Mengfan He ***@***.***> wrote: hmf21 left a comment (hmf21/AerialVL#6) Hi @diogo-aos, Thanks for your questions 1. About 250m 2. It is the label of the image which can be regarded as coordinates of the center point. 3. The camera is FLIR BFS-U3-31S4C-C and the intrinsics can be refered in [https://drive.google.com/drive/folders/1jBTVkU-Juvvf4py8laAY_AD0L3mJD82f?usp=drive_link]() 4. No, the given images are the raw images. -- Reply to this email directly or view it on GitHub: #6 (comment) You are receiving this because you were mentioned. Message ID: ***@***.***>

[hmf21]

Hi @diogo-aos.
Yes, the size of given tiles are 200m~300m.
Actually, the cropped tile could have different size if the drone has different flight altitude.