IR Indoor vs Outdoors

By: John Honovich, Published on Oct 29, 2012

IR 'works' much better indoors than outdoors, even if the light levels are equally as low and the distance is equally as far. This might sound weird at first but it is an important and fundamental issue that is critical in planning and assessing the range of integrated IR cameras.

Key Difference

The key difference is that indoors, IR light can reflect off of walls that are typically white or light color. This reflection helps increase the illumination effectiveness of the IR. By contrast, outdoors, IR light sent from the camera shines into the black distance.

We verified this in our IR illuminator performance test. Funny enough, we asked one manufacturer how they rated their IR illuminator for 100 feet. He described how the test was done inside of a warehouse with the IR illuminator shining off the back wall of the building.

In our tests, we found this to make a massive difference. We suspect many, or most, manufacturers also assume such indoor walled off tests.

Impact

In the rare case, you have a big dark indoor area to monitor, IR may work up to the manufacturer's specification. Otherwise, outdoors, be careful and assume only half the max distance.

Comments : Members only. Login. or Join.

Related Reports

Cheap Camera Problems at Night on Feb 19, 2020
Cheap cameras generally have problems at night, despite the common perception that integrated IR makes cameras mostly the same, according to new...
IR Surveillance Camera Guide on Feb 06, 2020
Integrated infrared (IR) cameras are everywhere in 2020, but not all IR is created equal, with many differences in coverage, overexposure,...
K3 Wall Mounted IR Temperature Gun Tested on Jun 12, 2020
Is this the solution to not spending thousands of dollars on fever cameras? Handheld IR guns are far lower cost than fever cameras but requires an...
Emitted Energy TempScan Thermal Screening System Examined on Apr 28, 2020
Emitted Energy has specialized in temperature measurement using FLIR cameras for industry and automation since 2013. Now, they have turned their...
ZKTeco Body Temperature and Mask Detection Reader Tested on May 26, 2020
While dedicated fever cameras emerged first, now tablet/kiosk fever detectors are ramping up. China's ZKTeco has been aggressively promoting such...
Integrated IR Camera Shootout 2020 - Avigilon, Axis, Bosch, Dahua, Hanwha, Hikvision, Panasonic, Uniview, Vivotek on Jan 30, 2020
The best and worst cameras tested in this IPVM shootout showed major differences in quality and performance. While many view IR as being a...
Seek Scan Thermal Temperature Screening System Tested on May 28, 2020
Now that IPVM has tested Dahua, Hikvision, and Sunell, we are returning to Seek, the first blackbody system we tested and retested it with our...
Directory of 162 "Fever" Camera Suppliers on Jul 09, 2020
This directory provides a list of "Fever" scanning thermal camera providers to help you see and research what options are available. There are...
Spectron IR Thermal Fever Screening System Examined on Apr 14, 2020
Most are quick to avoid "fever screening" and "medical" labels, but Oregon-based Spectron IR, with 10+ years of thermal medical imaging history, is...
USA ICI Elevated Skin Temperature Detectors Examined on Apr 06, 2020
Infrared Cameras, Inc. (ICI) is aiming to help slow the spread of COVID-19 with "pinpoint accurate skin temperature measurement" using their...

Most Recent Industry Reports

Remove Dahua and Hikvision Equipment "Immediately" Or Else Banned From US Government Contracts on Jul 10, 2020
The US government has directed contractors to remove covered equipment, such as Dahua, Hikvision, and Huawei Hisilicon products, "immediately." If...
ZeroEyes Presents Firearm Detection Video Analytics on Jul 09, 2020
ZeroEyes presented its Firearm detection Video Analytics system at the May 2020 IPVM Startups show. A 30-minute video from ZeroEyes...
Directory of 162 "Fever" Camera Suppliers on Jul 09, 2020
This directory provides a list of "Fever" scanning thermal camera providers to help you see and research what options are available. There are...
Clinton Public View Monitor (PVM) Mask Detection Tested on Jul 09, 2020
Face mask detection, or more specifically not wearing one, is expanding amidst the pandemic. Clinton Electronics has added this capability to their...
These Florida Real Estate Agents Are Now Selling "SafeCheck USA" Temperature Detectors on Jul 09, 2020
The "Kakon Brothers", William and Nathan, are self-described "south Florida Power Agents specializing in Luxury Real Estate" who "have closed over...
Avigilon ACC Cloud Tested on Jul 08, 2020
Avigilon merged Blue and ACC, adding VSaaS features to its on-premise VMS, offering remote video and health monitoring that was previously limited...
Hikvision's India Dominance Faces Threat on Jul 08, 2020
While Hikvision has become a dominant video surveillance provider in India, recent tension between the governments of India and the PRC is...
The US Fight Over Facial Recognition Explained on Jul 08, 2020
The controversy around facial recognition has grown significantly in 2020, with Congress members and activists speaking out against it while video...
Sperry West / Alibaba Tablet Temperature Measurement Tested on Jul 07, 2020
In April, we ordered a ~$500 temperature tablet from Alibaba. We set it to the side while doing 18 other temperature screening tests but, after...
Facial Recognition: Weak Sales, Anti Regulation, No Favorite, Says Security Integrators on Jul 07, 2020
While facial recognition has gained greater prominence, a new IPVM study of security systems integrators shows weak sales, opposition to...