Police thermal imaging

thetester

Active Member
Should an indoor gardener be concerned about police thermal imaging if the indoor garden is cool to the touch?
 

bseeds

Well-Known Member
no the machine work on hot images such as dryer vent outside lights chimnes if you put the exaust through some thing like a chimney or dryer vent they wont expect nothing or orund where they can not see it from the road there not even suppose to use it fror that unless they have like a judges ok but they first need sasepision then get ok from a judge but we all know how they break the law to try to catch people
 

mike.hotel

Active Member
I felt the need to chime in since I have personally worked with FLIR (Forward Looking Infrared) scopes and cameras, and I was part of a case study by the government when they were being designed.

Before I discuss the technology I want to make this point. Now I cannot speak on your geographical area and how MJ friendly it may or may not be, nor can I speak to the political agenda of your town, city, state, etc. The reason I am making this statement is because regardless of the technology or equipment, you cannot completely plan for the human element. You can prepare, but unless you are 100% stealth, the human element is the unknown. Example, a police chopper likes to buzz your neighborhood b/c you happen to live on a street with 20 playboy bunnies. He might hover over your house 24/7, and he has to make it look somewhat legit so he has scanners, scopes, and cameras running. Yea, far fetched example but if anything were to look out of place, you have just been added to a list.

So regarding the technology, hopefully someone more qualified than I, or someone who wants to read Google for a bit, can tell us the specs on the civilian models and what is currently being used. I can tell you in the military equipment that I used, you not only could see exhaust signatures, but you could see different levels which basically draws a picture of the inside of buildings. If you had a hot room, you could find it regardless of where it is in a building. Now if a room was completely insulated, and vented properly, you would have a much better chance.

So that said, someone please chime in. I just didn't want you to become narrow sighted and think that you only had to worry about the exhaust.
 

Red1966

Well-Known Member
The guy above sounds like a lawyer. I understand that newer infra-red cameras can see less than 1 degree difference. Your vents may be like a flashing neon sign to them. Disguise them as something innocuous they would expect to emit heat. If you run your lights in the daytime, IR is almost useless. Your whole roof is heated by the sun.
 

buckaroo bonzai

Well-Known Member
those flir are old.....why do you think the helicopters fly at night if you are in an mmj state....

the new generation can pick up thru walls

they pick up the heat signature thru the roof and walls....no matter what you do unless you go basement situation...passive solar

using the earth to shield ....
.you could try making a faraday (?)shield--Saran wrap..tin foil..Saran rap....it works for radar on the road

bounces right off--


yes flir can pick up one plant from 5miles.....mmj has one of the hottest heat signatures of any plant--
it vibrates very high -hot and there is only one other plant that has the same heat signature from what I was told
and that is redwood trees--go figure...:eyesmoke:
 

Red1966

Well-Known Member
Pot is not hot. Plants are the ambient temp. It's the heat from the LIGHTS that gives you away. IR can't "see" thru walls. The image is actually ON the wall.
 

colonuggs

Well-Known Member
they cant use thermal imaging without a warrant

A much more controversial drug case ruling decided by a 5 to 4 split on February 20, 2001, was Kyllo v. United States. The controversy surrounded the use of a thermal-imaging device to scan a residence for heat emissions.

Federal agent William Elliot suspected Danny Kyllo was growing marijuana in his home. Many people growing marijuana use high intensity heat generating lamps to facilitate its growth. Elliot parked his car across from Kyllo's home and aimed a thermal imager at the house to see if the heat emanating from Kyllo's home was consistent with readings that would be expected if these high intensity lamps were being used.

Elliot conducted the scan at 3:20 A.M. and took just a few minutes to find out that the garage roof and one wall of the house were hotter than the rest of the house as well as the houses of his neighbors.


.....................................Just the Facts...................................................

Federal agent William Elliot used a device that is widely available to the general public—an Agema Thermovision 210. Thermal-imaging devices detect infrared radiation, which is emitted by almost all objects, but is not visible to the naked eye.

Using this information, as well as the information from an informant and Kyllo's subpoenaed utility, Elliot got a search warrant to search Kyllo's home. The search revealed over 100 marijuana plants under the cultivation of high-intensity lamps as the imager showed. Kyllo tried to suppress the evidence, which was denied by the district court. Kyllo entered a conditional guilty plea and appealed his case to the 9th Circuit Court.

The 9th Circuit Court ruled that the district court should hold a hearing on whether the use of the thermal imager was intrusive and violated Kyllo's Fourth Amendment rights. The district court found the imager was non-intrusive, gave a crude visual image of heat being radiated from the outside of the house, did not show any people or activity in the house, and could not penetrate the walls or windows. Therefore no intimate details had been revealed by the scan. The 9th Circuit Court affirmed that Kyllo's rights had not been denied because of an unconstitutional search and seizure.


......................................Living Laws.................................................

Police cannot use an electronic device that would explore the details of your home without first getting a search warrant.

Kyllo then appealed the case to the United States Supreme Court. In a 5 to 4 decision, the Supreme Court found that to “explore the details of the home that would previously have been unknowable without physical intrusion, the surveillance is a 'search' and is presumptively unreasonable without a warrant.” Justice Scalia wrote the opinion for the Court and was joined by Breyer, Ginsburg, Souter and Thomas. Justice Stevens dissented and was joined by Rehnquist, Kennedy, and O'Connor.


Read more: The Supreme Court: Finding Marijuana with Thermal-Imaging Devices — Infoplease.com http://www.infoplease.com/cig/supreme-court/finding-marijuana-with-thermal-imaging-devices.html#ixzz2K32mc25i
 

fssalaska

Well-Known Member
Copyed from Jonus post: https://www.rollitup.org/legal-edge/136227-about-flir-2.html

They only need a warrant to use optical systems that can actually see through walls. FLIR cannot. FLIR merely picks up heat signatures on the surface of the outside of your building.

https://www.rollitup.org/legal-edge/1...st1674031.html

Already quite a bit on FLIR in that thread.

The other technology out there that it is assumed they are using, because the law in the US does state they need a warrant to use imaging equipment that sees through walls, and FLIR cannot see through walls therefore they dont need a warrant to use it, must be a microwave imaging system currently used by the military - as mentioned toward the end of that thread I posted above.

Microwave is not looking for heat signatures, it can penetrate through building material that is not metalic and feedback an image of the layout inside the room it is viewing. Building fire proofing paper usually takes care of that since it is lined with foil.

The supposed IR blocking variant on mylar being sold out there actually blocks microwaves nicely, but, does not block FLIR. Why, well because FLIR can't see through anything anyways, and heat still travels through the mylar, since that is the function of mylar, to reflect more light than heat to your plants. Where does the heat go? thats easy, through the mylar and to whatever is behind the mylar.

So assuming your local police do not have one of those microwave units, you really only need to focuss on not creating heat spots on the walls and roof of your shed.

If you have no other place to vent your heat, as in underneath or no roof cavity, then I assume there is no insulation on your roof, if so then I would suggest you not grow in that shed if you are concerned about FLIR. FLIR mounted under helicopters will pick up the heat signature on your roof if the only thing between the outside air and your lights is a tin roof.

Failing that if you still intend to grow in there, put an outside light on your shed and vent right beside it. FLIR would be expected to show a heat signature around the light. You could also run your lights on cycle during the day, therefore lights off at night would mean a lot less heat to vent.
 
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