Recent content by HughT

Thanks for everyone's help on this. Unfortunately I didn't take any still photos of the scene, and, being on the water on an stand-up paddle board, it's not possible to for me go back to physical location and retrace distances to any landmarks in the photo. I do know better what what...

Thanks Stephen and Dodo. I would be happy with a reasonable approximation, as long as the method is supportable (would want to refer to it in a potentially publishable paper). Does it help if I find two birds that align at 90 degrees, as shown in my new attachment? Again, we can assume both...

Sorry, I thought 35mm would be standard for the photos so I neglected to confirm. I've just checked the Properties for both jpegs and yes, they are both 35mm. The properties indicate that the dimensions are w1920 X h1080 for both, however; 72dpi for horizontal and vertical resolution, bit...

Hi Dodo. Yes, actually you are right, I know now that I did use a zoom button to zoom in a fair bit for the photo. I went back to the video and have re-captured two photos that I can use for my analysis. One is not exactly the same still as the one before, but close. For that one I was...

Hi Dodo and Chiro. Funny coincidence about your moniker, Dodo - coots look a bit like a small version of the old extinct bird when you see them walking. Perhaps Dodos are considered to have been a large rail bird (I'm not a bird expert, but am interested in collective phenomena, and coots...

Hi Chiro. Thanks so much for responding! I've attached a photograph to show what I'm looking for. Hopefully you will be able to access the photo. On it I show a standard measure of a bird (American coot) at 37cm, and the red angle line(s) to the bird I want to find the distance to. The angle...

Hi. I'm wondering if it's an acceptable method of measuring distance between two objects of known size by averaging their scales. In my case I have a photo of birds on the water. Each bird is known to be about 37cm long. I want to find the distance between two of them on the photo, the nearest...