5 ms·

If the photo in the article is the actual photo posted, then I'm most impressed. It seems out of focus in all the areas you'd expect to need detail to match fin

If the photo in the article is the actual photo posted, then I'm most impressed. It seems out of focus in all the areas you'd expect to need detail to match fingerprints.

Crosseye_Jack 5y ago
976px x 549px is a standard size the BBC use for images to be displayed on desktop computers. 976px x 549px would be half a megapixel. The BBC most likely resized the image they obtained from the NCA down to that res and prob threw some jpeg compression on it just as a matter of course when publishing the image to the site. While the focus would play a huge part, an iPhones camera (ok the phones were Android Based, but the res of an iphones main camera hasn't changed since the iphone 6s, which is what 5 years old by now? So its not unfair to say the phone model could easily of had just as a camera with just as high MP) is 12MP. So right off the bat the image you are looking could easily have 24 times less pixels in it then the image posted to the system, and thats before you throw in compression that could easily smooth out the fine detail of a finger print. EDIT: The BQ Aquaris X2 (which seems like was one of the models used on the service) comes with a 12mp camera. Even if the phones camera was disabled so the person had to manually copy the picture to the phone inorder to share it just means the picture we see on the BBC site could easy be just a shitty compressed of the orig that was shared.
- sorenjan 5y ago
  The full image is 2048x1152: https://ichef.bbci.co.uk/news/2048/cpsprodpb/F8F6/production/_118643736_cheese1.jpg https://ichef.bbci.co.uk/news/2048/cpsprodpb/F8F6/production... Anyway, it's still cropped, and in this other version from a different source you can clearly see part of his palm print, which the BBC references: https://www.merseyside.police.uk/SysSiteAssets/media/images/merseyside/news/may/stewart1.jpg https://www.merseyside.police.uk/SysSiteAssets/media/images/...
periheli0n 5y ago
Yep—there’s also tons of motion blur. Although this could perhaps be filtered out using deconvolution. Using the cheese label as ground truth to parameterise the deconv filter, this might just work.

If the photo in the article is the actual photo posted, then I'm most impressed. It seems out of focus in all the areas you'd expect to need detail to match fingerprints.

Crosseye_Jack 5y ago

976px x 549px is a standard size the BBC use for images to be displayed on desktop computers. 976px x 549px would be half a megapixel. The BBC most likely resized the image they obtained from the NCA down to that res and prob threw some jpeg compression on it just as a matter of course when publishing the image to the site. While the focus would play a huge part, an iPhones camera (ok the phones were Android Based, but the res of an iphones main camera hasn't changed since the iphone 6s, which is what 5 years old by now? So its not unfair to say the phone model could easily of had just as a camera with just as high MP) is 12MP. So right off the bat the image you are looking could easily have 24 times less pixels in it then the image posted to the system, and thats before you throw in compression that could easily smooth out the fine detail of a finger print. EDIT: The BQ Aquaris X2 (which seems like was one of the models used on the service) comes with a 12mp camera. Even if the phones camera was disabled so the person had to manually copy the picture to the phone inorder to share it just means the picture we see on the BBC site could easy be just a shitty compressed of the orig that was shared.

sorenjan 5y ago
The full image is 2048x1152: https://ichef.bbci.co.uk/news/2048/cpsprodpb/F8F6/production/_118643736_cheese1.jpg https://ichef.bbci.co.uk/news/2048/cpsprodpb/F8F6/production... Anyway, it's still cropped, and in this other version from a different source you can clearly see part of his palm print, which the BBC references: https://www.merseyside.police.uk/SysSiteAssets/media/images/merseyside/news/may/stewart1.jpg https://www.merseyside.police.uk/SysSiteAssets/media/images/...

periheli0n 5y ago

Yep—there’s also tons of motion blur. Although this could perhaps be filtered out using deconvolution. Using the cheese label as ground truth to parameterise the deconv filter, this might just work.