Hall Camera

[amdan 0]

I am trying to find a solution for a 100 foot stretch of 15 foot wide hallway that I need to cover. Anyone have any suggestions for a camera? Needs to be IP dome at least 1MP.

[Sky1 0]

Not sure how much detail you need but have you seen the new panasonic intelligent PTZ?

 

 

very cool stuff out there now.

[thewireguys 3]

Not sure how much detail you need but have you seen the new panasonic intelligent PTZ?

 

 

very cool stuff out there now.

 

That video over 4 years old. Not new.

[ljarrald 0]

Not sure how much detail you need but have you seen the new panasonic intelligent PTZ?

 

 

very cool stuff out there now.

 

its stupid, the first person to come into shot is criminal, the others are fine and the camera does not even look at them.

[Soundy 1]

Not sure how much detail you need but have you seen the new panasonic intelligent PTZ?

 

 

very cool stuff out there now.

 

its stupid, the first person to come into shot is criminal, the others are fine and the camera does not even look at them.

The camera doesn't know that.

[ljarrald 0]

Not sure how much detail you need but have you seen the new panasonic intelligent PTZ?

 

 

very cool stuff out there now.

 

its stupid, the first person to come into shot is criminal, the others are fine and the camera does not even look at them.

The camera doesn't know that.

 

sorry, worded it wrong.

 

*the camera assumes the first person to come into shot is criminal, and everyone else is fine and the camera does not even get a face shot from them.

[amdan 0]

Don't want PTZ, I want something that will not turn a 6ft person into an ant when viewing 100 ft down a hall.

[survtech 0]

Try criss-crossing two cameras at opposite ends of the hall with long (5-50mm or narrower) lenses. Essentially, you mark the center of the length of the hall and zoom each camera so that it just sees the entire width at that center point. The zoom effect makes the hall appear far shorter than it is.

[amdan 0]

Try criss-crossing two cameras at opposite ends of the hall with long (5-50mm or narrower) lenses. Essentially, you mark the center of the length of the hall and zoom each camera so that it just sees the entire width at that center point. The zoom effect makes the hall appear far shorter than it is.

 

 

Interesting. What does the "zoom effect" do to the rest of the image? Is the rest of the image focused? Like the closer range sections. If I have to I will put two cameras in but I was hoping to only use one.

[survtech 0]

Try criss-crossing two cameras at opposite ends of the hall with long (5-50mm or narrower) lenses. Essentially, you mark the center of the length of the hall and zoom each camera so that it just sees the entire width at that center point. The zoom effect makes the hall appear far shorter than it is.

 

 

Interesting. What does the "zoom effect" do to the rest of the image? Is the rest of the image focused? Like the closer range sections. If I have to I will put two cameras in but I was hoping to only use one.

It works in our casino. You are actually focusing on the more distant objects and using the camera at one end to see the opposite end. I assume that light levels would come into play, though. Our hallways have 4x48" flourescent fixtures spaced about every 12 feet or so. With the irises closed down so much, focus becomes far less critical.

 

I call it the "vertigo effect", as in the Alfred Hitch**** movie.

[nDAlk90 0]

Cameras are also often criss-crossed at big chain supermarkets in the center of each isle. Its much better for the cameras to be somewhere in the middle of the isle then in the end.

 

 

Try criss-crossing two cameras at opposite ends of the hall with long (5-50mm or narrower) lenses. Essentially, you mark the center of the length of the hall and zoom each camera so that it just sees the entire width at that center point. The zoom effect makes the hall appear far shorter than it is.

 

 

Interesting. What does the "zoom effect" do to the rest of the image? Is the rest of the image focused? Like the closer range sections. If I have to I will put two cameras in but I was hoping to only use one.

It works in our casino. You are actually focusing on the more distant objects and using the camera at one end to see the opposite end. I assume that light levels would come into play, though. Our hallways have 4x48" flourescent fixtures spaced about every 12 feet or so. With the irises closed down so much, focus becomes far less critical.

 

I call it the "vertigo effect", as in the Alfred Hitch**** movie.

[survtech 0]

By the way, the trick won't work with every camera. The chosen cameras have to be able to aim nearly fully horizontal. That's something many domes can't do and even fixed domes in back boxes can have issues because the dome itself is either too small in diameter to be able to fit a camera and a 5-50mm lens down inside the bubble or the bubbles get optically distorted near the edge.

[thewireguys 3]

Survtech is correct cameras at the ends with 5-50MM work much better then cameras in the middle. We just finished up a takeover at a hotel and the other company installed the cameras in the middle of the hallways. We adjusted the FOV and zoomed down the hallways with the results being much better with greater detail farther down the hallways.

[thewireguys 3]

Cameras are also often criss-crossed at big chain supermarkets in the center of each isle. Its much better for the cameras to be somewhere in the middle of the isle then in the end.

 

 

Try it an you will see the difference.

[nDAlk90 0]

This is what I though:

 

Cameras in middle looking towards fronts (entrance) of isles will capture faces of persons entering. Camera in front and back will capture back of person.

 

Try it an you will see the difference.

[Soundy 1]

This is what I though:

 

Cameras in middle looking towards fronts (entrance) of isles will capture faces of persons entering. Camera in front and back will capture back of person.

 

Try it an you will see the difference.

Person still has to exit the aisle....

[nDAlk90 0]

True But when people enter isle their head is usually up and looking forward, as a person exits the face usually looks down and to the side. No?

 

Person still has to exit the aisle....

[rory 0]

depends how big it is

[Numb-nuts 1]

What method you use depends very much if you have a monitored system or a unmonitored system. If you have a monitored system I would humbly suggest a couple of static mini power zoom cameras at either end. That way the security staff can zoom in or out depending what they want to view. Positioning is something you will need to asses yourself to get the best out of it.

 

By the way, regrding the video, an operator can select and change the subject that the camera tracks at will. These auto track systems aren't much help unmanned but are very effective if manned and aid the operative in gathering footage which may become evidence later. Even guided missiles need a human to punch in the data. even if they are 4 years old.

[survtech 0]

This is what I though:

 

Cameras in middle looking towards fronts (entrance) of isles will capture faces of persons entering. Camera in front and back will capture back of person.

Think about it again. Let's say you have one camera at each end of a north/south aisle. A customer enters from the north. The camera at the south end will see their face. If another customer enters the aisle from south. The camera at the north end will see their face.

 

Maybe if they entered, turned around and immediately exited the aisle, it would be difficult to ID them but if they just walk less than 1/4 of the way down the aisle, their face will be ID-able.

 

By the way, the cameras don't have to be at exactly the end; they can be maybe 1/8 to 1/10 of the way or so from the end. The closer they are to the center of the aisle, the less zoom they will need. However, the less the zoom, the longer the aisle will appear to be (people at the opposite end will appear smaller) and the less likelihood of ID'ing them.

 

The key to this working well is to adjust the zoom so that the aisle width fills the horizontal frame at the halfway mark.

[nDAlk90 0]

Makes sense. Can you show us some example pictures?

 

This is what I though:

 

Cameras in middle looking towards fronts (entrance) of isles will capture faces of persons entering. Camera in front and back will capture back of person.

Think about it again. Let's say you have one camera at each end of a north/south aisle. A customer enters from the north. The camera at the south end will see their face. If another customer enters the aisle from south. The camera at the north end will see their face.

 

Maybe if they entered, turned around and immediately exited the aisle, it would be difficult to ID them but if they just walk less than 1/4 of the way down the aisle, their face will be ID-able.

 

By the way, the cameras don't have to be at exactly the end; they can be maybe 1/8 to 1/10 of the way or so from the end. The closer they are to the center of the aisle, the less zoom they will need. However, the less the zoom, the longer the aisle will appear to be (people at the opposite end will appear smaller) and the less likelihood of ID'ing them.

 

The key to this working well is to adjust the zoom so that the aisle width fills the horizontal frame at the halfway mark.

[Soundy 1]

This is what I though:

 

Cameras in middle looking towards fronts (entrance) of isles will capture faces of persons entering. Camera in front and back will capture back of person.

Think about it again. Let's say you have one camera at each end of a north/south aisle. A customer enters from the north. The camera at the south end will see their face. If another customer enters the aisle from south. The camera at the north end will see their face.

 

Maybe if they entered, turned around and immediately exited the aisle, it would be difficult to ID them but if they just walk less than 1/4 of the way down the aisle, their face will be ID-able.

 

By the way, the cameras don't have to be at exactly the end; they can be maybe 1/8 to 1/10 of the way or so from the end. The closer they are to the center of the aisle, the less zoom they will need. However, the less the zoom, the longer the aisle will appear to be (people at the opposite end will appear smaller) and the less likelihood of ID'ing them.

 

The key to this working well is to adjust the zoom so that the aisle width fills the horizontal frame at the halfway mark.

The other issue is, the camera in the middle will have to be on a steeper angle when focused on the end. The further you move it from the target zone, the shallower the angle you can use, the more face and less bald spot you get. Remember, you're technically not concentrating on the center of the aisle, but on the far entrance to it.

[survtech 0]

Makes sense. Can you show us some example pictures?

Sorry, casino policy.

[rory 0]

Sorry, casino policy.

just tell them you showed the pictures to people that dont care about their policy " title="Applause" />

[survtech 0]

Why, want to move to California? There would be a job opening here!