Jamestysecurity
Getting the hang of it
Hi Everybody, It's me, James again. Sorry for posting this thread lately. In the past two weeks, I was busy with Dahua Thermal Body Temperature Monitoring Project. This system is capable of highly accurate body temperature monitoring ±0.3℃ (with blackbody) and I will definitely write a review for it in the future.
Thermal System:
Ok, Let's go back to business. After listened many advice and suggestions, I redo the tests. This time, walking person with a number plate were involved and the relevant video has also been uploaded in the YouTube.
I also tested some HIKVISION cameras (DS-2CD2385G1-I, DS-2CD2346G1-I/SL and HILOOK IPC-T240H), and will update the results lately.
Camera list:
Eight cameras were tested one by one, with some road lamps under this condition. When a camera was tested, the IR or LED lights of the other cameras were covered by black tapes in order to eliminate the influence. Exposure setting is 1/50 and all cameras are color mode forced.
The Comparsion Video: !!!!!!!!
Conclusion:
Thermal System:
Ok, Let's go back to business. After listened many advice and suggestions, I redo the tests. This time, walking person with a number plate were involved and the relevant video has also been uploaded in the YouTube.
I also tested some HIKVISION cameras (DS-2CD2385G1-I, DS-2CD2346G1-I/SL and HILOOK IPC-T240H), and will update the results lately.
Camera list:
- IPC-HDW2431TMP-AS 4MP Startlight IP camera
- IPC-HDW2831TMP-AS 8MP Startlight IP camera
- IPC-HDW3441TMP-AS Lite AI 4MP Startlight IP camera
- IPC-HDW5442TMP-AS Pro AI 4MP Startlight Plus IP camera
- IPC-HDW5442TMP-AS-LED Pro AI 4MP Full Color IP camera
- IPC-HDW5541TMP-AS-PV ActiveDeterance 5MP AI Camera
- IPC-HDW4631EMP-0280 6MP IR IP camera
- IPC-HDW4831EMP-ASE 4mm 8MP IR IP camera
Eight cameras were tested one by one, with some road lamps under this condition. When a camera was tested, the IR or LED lights of the other cameras were covered by black tapes in order to eliminate the influence. Exposure setting is 1/50 and all cameras are color mode forced.
The Comparsion Video: !!!!!!!!
Conclusion:
- 2431 is the most cost-effective camera in terms of night vision. If you want your camera has some AI functions, like SMD or Smart IVS, new 3 series lite AI camera is also a good option.
- 2831 is more likely to stay IR mode than color mode in a lowlight environment at night.(same envirnment, 2831 is BW and 2431 is color). However If you force 2831 to color mode, serious motion blur will be produced.
- 3441 is the leader in the second echelon (3441, 2431, 2831 and 5541). Small motion blur and picture noise and has more AI function than 2431.
- 5441-pv seems to has a poor performance in terms of night vision. Although it has a pretty big CMOS sensor (1/2.7” ), there are still plenty picture noise and motion blur. The light sopt of this camera is two-way talk and audio and light warming function.
- 5442-LED and 5442 are the top two night vision cameras, while 5442-LED is better in a complete dark environment owing to its extra LED lamp. Therefore, if you want get the color image in a very dark condition, 5442-led fullcolor camera is a only choice. If the environment has some light, number plate is very hard to be recognized by 5442-led, due to the strong reflection, but It is worth noting that 5542 do make other objects (like human face or clothes) clearer.
- As the old generation, 4631 and 4831 are at the bottom.
