Looks interesting, but I question the "5D" aspect, looks more like 3D with time (4D), but with a wider bandwidth of the electromagnetic spectrum (still only 4 dimensions).
Ray Bernache When speaking mathematically, "dimension" isn't limited to spatial or temporal dimensions, and might even disclude those sorts of dimensions because the emphasis is on other properties that could be described dimensionally. So the usage of "dimensions" here is proper -- but admittedly easy to misinterpret if you only think of dimensions in the Einsteinian sense.
Lilith Dawn While that may technically be correct, regarding this article I'd disagree, or conversely we've always had 5D cameras, just not as capable. The article stated This 5D process means capturing data related to multiple wavelengths of light, along with spatial coordinates, as a function of time
multiple wavelengths of light (basically the same as any camera, just larger spread of the electromagnetic spectrum) along with spatial coordinates L, W, D (Dimensions 1, through 3) as a function of time (4th dimension)
I count 6 in a normal (color) videocam: x, y, t, R, G, B. Here they're adding depth (z) and presumably at least one additional color channel (they mention IR), but the article is exceedingly skimpy on useful technical detail.
Greg Roelofs xy(z) and rgb are both basically the same spectrum, xyz being hardware independent (more accurate reproduction across different hardware), both of which are color spaces to describe what the average human eye can see.
Oh and your videocam captures across time, so it covers the 4th D;)
which brings us back to other than a wider bandwidth of the electromagnetic spectrum, it's no different than any other camera (videocam)
But yes, the article would really benefit with additional details
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Looks interesting, but I question the "5D" aspect, looks more like 3D with time (4D), but with a wider bandwidth of the electromagnetic spectrum (still only 4 dimensions).
ReplyDeleteRay Bernache When speaking mathematically, "dimension" isn't limited to spatial or temporal dimensions, and might even disclude those sorts of dimensions because the emphasis is on other properties that could be described dimensionally. So the usage of "dimensions" here is proper -- but admittedly easy to misinterpret if you only think of dimensions in the Einsteinian sense.
ReplyDeleteLilith Dawn While that may technically be correct, regarding this article I'd disagree, or conversely we've always had 5D cameras, just not as capable.
ReplyDeleteThe article stated This 5D process means capturing data related to multiple wavelengths of light, along with spatial coordinates, as a function of time
multiple wavelengths of light (basically the same as any camera, just larger spread of the electromagnetic spectrum)
along with spatial coordinates L, W, D (Dimensions 1, through 3)
as a function of time (4th dimension)
Yes, and I think it's safe to say this article could have been written to be much clearer on that point. We probably agree on at least that much.
ReplyDeleteI count 6 in a normal (color) videocam: x, y, t, R, G, B. Here they're adding depth (z) and presumably at least one additional color channel (they mention IR), but the article is exceedingly skimpy on useful technical detail.
ReplyDeleteGreg Roelofs xy(z) and rgb are both basically the same spectrum, xyz being hardware independent (more accurate reproduction across different hardware), both of which are color spaces to describe what the average human eye can see.
ReplyDeleteOh and your videocam captures across time, so it covers the 4th D;)
which brings us back to other than a wider bandwidth of the electromagnetic spectrum, it's no different than any other camera (videocam)
But yes, the article would really benefit with additional details
Here's the research paper :
ReplyDeleteosapublishing.org - www.osapublishing.org/DirectPDFAccess/A2849EE3-A571-EE5E-3C9097B8AC22672C_396547/oe-26-18-23366.pdf?da=1&id=396547&seq=0&mobile=no
Sounds like it's similar to an astronomical IFU. Three spatial dimensions plus frequency and time. RBG colours are broadband, not spectral lines.
Rhys Taylor Link fails on Firefox, and Chromium
ReplyDeleteWeird, no idea why that happens. Here's the journal link from where you can download the PDF :
ReplyDeletehttps://www.osapublishing.org/oe/abstract.cfm?uri=oe-26-18-23366
Rhys Taylor So yep, nothing really different, still a another colored 3D image over time.
ReplyDelete