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Dahua 4MP 25mm LPR Modification

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EMPIRETECANDY

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mcorzine said:
I seen on another post that the IPC-HFW5431E-Z5 is delayed until the 14th. I'm patiently waiting for a review. Hopefully @nayr doesn't have too much going on at home & work when this arrives. If it turns out good I'll definitely be in for 1.
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Lol, already get 5pcs, but Nayr will be the first guy to test this. All will be done soon. Hope all well.
 
wantafastz28

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Mattias

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Maybe a stupid question... but what would theoretically be best for a dedicated LPR camera, 2mp(HFW5231E-Z5) or 4mp(HFW5431E-Z5)?
 
nayr

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I think the 4MP camera; the starlights are too sensitive to use in a high light environment like this
 
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kevkmartin

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I can't wait to find out!!! I'm supposedly right behind nayr on the list to receive one once in stock next week.
 
nayr

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those are a bit more expensive ultra models; I think most people here will be interested in the Eco Starlights over the Ultra's given the cost premium of the Ultras
 
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what do you think about the -Z12 larger zoom popularity for LPR or just general use, as i seem to want 12mm to maybe 20mm in over half of my layouts? Cost premium? I am anxious to hear the review of the 4MP IPC-HFW5431E-Z5 for LPR. I just noticed the Z12 only comes in the 2MP.
 
nayr

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The Z5 should have you covered on optics, I havent done alot of testing w/the Starlights on LPR but the lil bit I did required the shutter speeds so high and the gan levels so low I think your going to have problem w/variation.. if you get it tuned so a nice good new clean plate from being overexposed, I think you'll be running setting that will make getting older and dirty plates pretty much under exposed and unreadable..

I'll do more testing when I get some Z5's in both Starlight and 4MP
 
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cb8

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Interestingly Dahua's dedicated LPR cameras seem to be mostly Starlights, with the latest ITC237-PU1A-IRHL looking like it has the same sensor as the Ultra Starlights if the specs are correct.

I wonder, shouldn't low gain levels be beneficial for handling variations? From photography, if I push the ISO too high the dynamic range is reduced. In similar ways I would have expected low gain settings to be beneficial for handling large variations between dark and bright.
 
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Should be gettin a Z5 ultra starlight this week with 35mm zoom, gonna try a bunch of stuff with it but I will definitely test it with LPR, kinda pricey camera to use only for LPR but it is what it is haha. I'll be interested to see how it does.
 
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cb8

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I grabbed a non-ultra IPC-HFW5231E-Z5 to play with while waiting for the 4MP. Then if the 4MP turns out to be the better choice for LPR, I have a few other potential spots where a Z5 Starlight would still be beneficial.
 
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nbstl68

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So will the ITC237-PU1A-IRHL ANPR camera do the LPR capture and database storage for you then without having to figure all that out separately post process or am I misunderstanding?
It says "embedded white list database..." and "Embedded with lpr engine in the camera".
 
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