pewter 0 Posted September 27, 2011 Hi, I'm new to this forum and new to CCTV, would really appreciate some advice... My client has an Axis P1347 and 2 x P3344. We are currently getting jpegs of 2560x1920 out of the P1347 and 1280x720 out of the P3344. At a glance the images seem high quality but when we zoom in we do not get the level of detail my client is looking for (registration plates, facial recognition etc). High quality video streaming video is less important than high quality stills. We could forget streaming video altogether and have a device that takes some high quality stills triggered by motion. I can write custom software for this if need be but need to have the right equipment in the first place. Can anyone recommend anything that might help? Alternative equipment can be purchased if necessary. Thanks in advance... Share this post Link to post Share on other sites
Soundy 1 Posted September 27, 2011 How large an area are you covering with these cameras? What distances are the plates and faces at? Are you using the appropriate megapixel lenses? What is the budget to get this done? Share this post Link to post Share on other sites
pewter 0 Posted September 27, 2011 Thanks for your reply Soundy. The system will be used in a number of outdoors locations, business and residential. The first and pilot project will cover an area around 10x20 metres. I think other locations may need to cover a wider area but don't know the full details yet, will find out. I think the P1347 has 3.5-10mm verifocal lens, and the P3344 has 2.5-6 mm. It could be that these can be refocused to give the required effect. Will check. I'm in the very unusual situation of having no budget for this project! I must find the right solution, at this time cost is not an issue. Share this post Link to post Share on other sites
Soundy 1 Posted September 27, 2011 Cost is not an issue? Hmmmm... viewtopic.php?f=19&t=11322&start=83 Honestly, unless the camera is 100m away, you should be able to get a super-clear picture of a 10x20m area (providing, again, it's a proper megapixel lens). Try identifying a "choke point", a limited area that everyone/everything you want to identify will have to pass through, and then zoom in to limit the field of view to that area. Share this post Link to post Share on other sites
pewter 0 Posted September 27, 2011 I think we need to take another look at the lens in all cameras. I agree we should be able to get good resolution pictures from both cameras (they seem to be highly rated?) within the kind of range we are looking at. Getting in touch with Axis seems like a good idea also. Thanks for the link, I'll suggest it to my client and let you know what happens. "Cost is not an issue". I'm sure it will be at some point but there is no target budget at present. As I said, I'm in a very unusual situation!! Thanks, will post again to let you know how it goes... Share this post Link to post Share on other sites
Soundy 1 Posted September 27, 2011 Maybe post some of the pictures you've got now...? Share this post Link to post Share on other sites
NotoriousBRK 0 Posted September 27, 2011 Hi, I'm new to this forum and new to CCTV, would really appreciate some advice... My client has an Axis P1347 and 2 x P3344. We are currently getting jpegs of 2560x1920 out of the P1347 and 1280x720 out of the P3344. At a glance the images seem high quality but when we zoom in we do not get the level of detail my client is looking for (registration plates, facial recognition etc). High quality video streaming video is less important than high quality stills. We could forget streaming video altogether and have a device that takes some high quality stills triggered by motion. I can write custom software for this if need be but need to have the right equipment in the first place. Can anyone recommend anything that might help? Alternative equipment can be purchased if necessary. Thanks in advance... As a rough estimate, you're going to need at least 75 pixels per foot to get really good image detail. You might be able to get by with 50ppf in really good lighting. It's easiest to figure this across the horizontal FOV. On your 1080p camera: 1920 pixels across the HFOV / 755 pixels per foot = 25.6 feet. In any area of the field of view where that camera is covering an area 25 feet wide or less you should get good image detail (provided you have a good lens, proper focus, etc.). If you are trying to cover an area 100 feet wide (for example), then you are spreading each pixel over an area 4x as large as what you need to in order to maintain good image detail. Share this post Link to post Share on other sites
pewter 0 Posted September 28, 2011 Thanks NotoriousBRK. I appreciate I've been a bit vague here about what I'm trying to do - budget, area etc but thats what I'm working with at present. I'm looking into all kinds of possible solutions. One of those might be the remote use of regular digital cameras to take high quality images. Share this post Link to post Share on other sites
ssmith10pn 0 Posted September 28, 2011 20 meters wide will take 4875 pixels in width for Tags and 5850 for facial. Share this post Link to post Share on other sites
