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gjy3035 / GCC-CL

GCC dataset Collector and Labeler (GCC CL) [CVPR2019]
https://gjy3035.github.io/GCC-CL/
MIT License
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Format of JSON Files #33

Open fatbringer opened 9 months ago

fatbringer commented 9 months ago

hello! I have a question regarding the format of the JSON files

"camera": {"location": [-1429.03, -969.06, 32.7857], "rotation": [-19.942, 1.10123e-05, 92.217], "fov": 40.0}}

1536409531

for the camera location, does it represent X, Y and Z value? Is the Z value the height in terms of metres?

For the FOV value, is that the pitch angle down from the horizontal view? Or is the rotation value, which of them is the pitch angle?

Thanks!

Elin24 commented 7 months ago

Sorry for latter reply, location is the world coordinate of the camera; rotation represents Pitch, yaw, and roll, and fov is the filed of view ranged from 1.0 to 130.0.

fatbringer commented 7 months ago

@Elin24 I see. Does the location correlate with real world equivalent height? Like is 100 in Z coordinate = 1m approximately to real life size?

Elin24 commented 6 months ago

Sorry, I'm not sure about this.

You can suppose it is 1m. if it is not right there will be just a scale factor for correction because the coordinate is linear to the physical world.