Add metadata fields for camera intrinsics

[claudenozeres]

Related to EXIF metadata (should be in file data of still images, or lost), or other aspects about cameras, especially video?

[hohonuuli]

Camera intrinsics have to be included by the image owner. Possible existing methods:

• Add to image Metadata (EXIF or itxt)
• Add as a column when submitting the image. The data will be included as a tag on the image.

[claudenozeres]

Note: EXIF is from camera still images. Video sequences and video screen captures (usually PNG) won't have it.

[hohonuuli]

@claudenozeres There are tools and programming language libraries that allow custom metadata to be embedded into any image. Generally, it's EXIF for JPEG images, an iTXt for PNGs. When MBARI makes our images public, we always embed copyright and other info into the image. For example, if you paste this URL, https://fathomnet.org/static/m3/framegrabs/Doc%20Ricketts/images/0747/00_44_02_00.png into https://exifmeta.com/ it will show the following metadata:

name	value
ImageWidth	1920
ImageHeight	1080
BitDepth	8
ColorType	RGB
Compression	Deflate/Inflate
Filter	Adaptive
Interlace	Noninterlaced
Latitude	23.655652 N
Longitude	-108.41491 E
VideoReferenceUUID	9f932f8c-becf-4bd3-ac6b-640342000eb0
DateTimeOriginal	[object Object]
Description-en-US	Image exported from MBARI's Video Annotation and Reference System
Copyright-en-US	Copyright 2015 Monterey Bay Aquarium Research Institute
ObservationUUID	9604f482-ed9e-457d-bcda-c5da31299572
CreationTime-en-US	2016-02-26T21:45:43.607Z
Comment-en-US	Grimpoteuthis observed by lonny
Depth	2429.65m

For my ref, link to example code (in private repo though) in ImageUtil.scala

[claudenozeres]

Thanks! I was commenting on 'camera intrinsics'. Yes, metadata may be added beyond the camera-created file.