Posts Tagged ‘ motion detection’



The Differences Between Motion Detection, Auto Tracking, and CCTV Analytics

Written By:
Monday, November 11th, 2013
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When it comes to some of the terminology in Closed Circuit Television (CCTV) systems, it can be very confusing and often times the terms sound very similar. I often have customers call me asking for a motion detection camera that will follow a person that comes on to their property. I am going to cover the main differences and similarities of motion detection, auto tracking, and analytics.

Motion Detection in Surveillance Systems

With motion detection in a camera system, it is not like motion detection in an alarm system. With an alarm system there is a PIR (passive infrared) sensor that is send a beam into an area, when that beam is broken the sensor determines that motion has occurred. This beam can be changed with the amount of sensitivity that it has, this is generally utilized when someone has pets in their place and the don’t want to trip the sensors. With a camera system the motion detection is a little more simplistic, the camera is producing an image which the DVR (Digital Video Recorder) sees as an algorithm, when something changes in that algorithm the DVR determines this as a motion event. A simple cloud passing overhead can cause enough pixels in the image to change to have the algorithm change, making the DVR think that motion has occurred. If you have plants that blow in the wind, it can cause the algorithm to change. If you have anything that blows in the wind, the algorithm will change. Now you can adjust some of the settings in the DVR to help alleviate these false alerts. These settings can be found in the Main Menu, then go to Detect, then select the channel you want. You can adjust the sensitivity of the motion detection. If you have a Techpro Security DVR, the standard setting is at 3, which is a mid range sensitivity. If you are getting too many false alerts, you may try going to a 2 or 1. One is the least sensitive and six is the most sensitive setting is a Techpro DVR. If you are still getting false alerts, you may want to go into the motion detection and adjust the region of the image that is causing you the most problem. The factory default is to have the whole image shaded in Pink to detect motion detection. Any square that you deselect or that you can see the image with no color, you are deactivating the motion detection for.

This is an image from the Web Service of the Motion Detection settings on one of my cameras. As you can see the tiles that have motion detection active in this image are blue, this is because when using the Web Service the shaded areas have a different color than at the DVR. You will also notice a different color if you are using TechproSS for PC to set the configurations as well. The results are still the same though. The top three rows in the motion detection on this image are deactivated, this is because I am not worried about anything causing motion in those areas. Now if someone or something were flying that low, then I may want to reconsider this. At this moment I don’t know of any thieves using jet packs!I generally will use a sensitivity of 1 on almost all of my cameras, this may not work for everyone, but it has served it’s purpose for me. One big false motion event will commonly occur at night, this is generally do to bugs loving the IR (Infrared) light that the cameras produce to help them see at night. Bugs and other insects also enjoy this light, now humans can’t see this light but this helps the camera to see when there is absolutely no light available and enhances any light available to it.

Motion Detection

Auto Tracking Security Cameras

Now if you want a camera that will follow or track an object that comes into it’s line of site, you will want an Auto Tracking PTZ ( Pan Tilt Zoom ) camera. These cameras are great for locations where there is not supposed to be movement. When an object changes the pixelization of the image the camera will respond and start “tracking” what changed the pixels. This is a great idea for a camera, but generally fails in several ways. The biggest failure of this camera is if 2 objects come into the camera’s line of sight and then move in opposite directions. The camera will follow the bigger of the objects not knowing which is more likely to cause the issue. Another failure with this type of camera is, if the camera is following an object and the object stops for a short time. The camera will default back to it’s home position, leaving the object to continue on unnoticed. In theory Auto Tracking PTZ’s are awesome, but in practicality they have some major faults. Now if you could add Analytics to this camera, you would have a phenomenal solution.

CCTV Analytics

Analytics is a program that runs in correlation with a DVR, that analyzes the images coming from the camera in real time to determine certain criteria. The different criteria can generally be set by the user to accomplish their needs. On some software you can set up different if statements that will react in different ways. For example, you can draw a line on the image, and say, “If an object passes this line going in this direction, then take a snapshot, record, and sound an alarm.” You can also put in an if statement like, “If an object passes this point and stays for this amount of time, sound an alarm, send an email, and record.” You can generally get as complex as you want with this type of software or stay as simplistic as you want. Some analytical software that I have seen will allow you to find a specific person and it will go through the recorded footage and give you that persons path every time they passed through that camera.

Now the military and other government agencies have analytical software that would blow the general public’s mind. I have worked with a few ex-military special force guys, who explained briefly some of the things that the software they used could do. Some of the features in these programs are so advanced, that I think they will never reach the civilian market, but I am glad that they are being employed to keep our troops safe in the hostile environments we currently find ourselves in.

I hope this article has helped to clarify the differences between these terms to help you better understand what you will need to have an effective security system. Motion Detection can be found on most surveillance systems on the market, Auto Tracking is a cool feature, but has many flaws, and Analytics is the best but can get very complex.

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DVR Motion Detection

Written By:
Monday, April 9th, 2012

What is Check Fraud?

If you are the proud owner of your own retail business, you are probably familiar with just how dangerous it can be to accept checks in general. There are a lot of false checks in circulation, as well as fraudulent ones that don’t even have a legitimate account to be linked to. You may not be aware of just how much a security camera will be able to help you in your business and put an end to this type of problem from happening. They will help you to apprehend the suspect and make sure that they are properly punished to the fullest extent of the law. Having a security camera right above your cash register is one of the best ways to prevent this type of behavior from happening in the first place. When your camera is properly placed you are going to make it virtually impossible for someone who is writing a fraudulent check to be able to disguise their true identity. This is one of the best deterrents out there today. Combining the cameras with the footage that you recorded will be one of the most powerful pieces of evidence when you are faced with the thief in court and need solid evidence.

One of the main problems that you are going to face as a retailer when dealing with check fraud is catching the act before it is too late to do anything about it. The last thing you want is to let the criminal skip town and make a clean break before they can be prosecuted. Another complication is making sure that the footage is not recorded over because you don’t have enough free space to be able to hold all of the images on your recording device. When you have an effective DVR you are not going to have to worry about this problem in the future. You will be able to choose the perfect equipment for all of your needs to make sure that the security camera footage is going to stick around for a very long time. This will help you to keep the perfect records of any potential activity that will help you nail the perpetrator of the crime, regardless how long ago it happened.

When you are dealing with this particular type of theft or fraud, security cameras are going to be one of the best components to solving the problem. There are other options that you can look into as well to compliment your security system, but you should always be prepared. You can also look into some of the software on the market that will monitor your account balances and make sure there are no dramatic changes that occur, as well as other deterrents to prevent your business from having to deal with fraud.

What about Credit Card Theft?

The necessary steps that you need to take to eliminate the potential for credit card theft are pretty similar to that of check fraud. One of the first measures that you are going to need to take for defending your business against this threat is having a high definition camera installed by the cash register to make sure that the transactions are monitored at all times. Another important place to install a security camera is on the entryways into your business. Whenever you are dealing with the security in your retail storefront you are going to have one key advantage that the online businesses will not. You will actually have contact with the people who are doing it and be able to see them. Provided you have the proper security cameras in place, you will be able to stop them in their tracks and make sure they are apprehended.

Whenever you are dealing with the security of your retail business you need to make sure that you have more than just a couple cameras in place. You will also need to make sure you have a top of the line DVR and a complete security package. There are numerous resources available for you to learn what you can do to prevent credit card fraud from happening using a lot more than just your simple camera. Even though you may not be able to pinpoint when the crime is going to occur, you will have your eyes on the criminal at all times and make sure that your business is not a repeat target for offenders. Take the time to invest in your business by doing the necessary research to make sure that you are choosing the perfect security system for your business. You don’t want to become the victim because of a simple mistake that can be made by putting all of your faith into one camera. Even though having a security camera in place is an extremely effective deterrent, you need to make sure that your bases are covered in more ways than one.

How Difficult is Sweethearting?

Sweethearting has long been one of the most difficult to catch forms of theft for retail business owners. It is essentially the practice of having the employees and cashiers giving away merchandise to people they know for free. You may also find a lot of discounts appearing or ringing up orders incorrectly on purpose as a way to be able to give something to their friends and family for a far cheaper price than what it should be, if not free. There are numerous ways that this type of transaction can go down and it may be harder than you think to be able to pinpoint it all down to the wire. You may see that items are not scanned at all, or if they are the price is a lot less than what it should be. It may also involve the employees swindling small amounts of money and then proceeding to hide it with various fixes of accounting errors.

The following are a few different ways that you may see employees attempt to steal your money through various forms of sweethearting:

• Failure to scan merchandise in the first place or improperly scanning it.
• Going over your existing prices and giving a large discount on the more expensive items in your establishment.
• Providing refunds for an item that was never returned, as well as giving a refund for an item that is far more substantial than what the cost of the original item purchased was.
• Voiding a transaction without cause, yet the merchandise is still exiting the premises.
• Handling sales invoices improperly or not entering them at all.

All of the aforementioned items are going to be more difficult to catch and sometimes even the highest forms of security software are not going to be able to do the job perfectly all the time.

The only way that you are going to be able to get the evidence that you need to be able to prove that this is happening is through video recorded from your security cameras. Hence, the video camera that is pointing at the cash register will be your main point of focus once again. It is imperative that you do not let this slip through the cracks if you want to make sure that your business is protected. You will be able to have the peace of mind in knowing that every movement that your employees make will be caught on tape and recorded for later viewing. If you do happen to see something suspicious on the recording that concerns you with sweethearting, you will be able to go back through the tapes and review the footage for yourself to see what the evidence has in store for you.

When you are talking about this specific type of security, you are going to want to make sure that you have the best footage out there. This is one of the reasons why an HD camera is going to receive the top recommendations for making sure that your register is protected at all times. You can choose to buy your high definition camera and DVR at the same time to make sure that you receive the best pricing around and that you are not missing out on any vital components of your security system.

In short, there is more than one way for a potential thief to take advantage of your business and it is up to you to protect yourself. If you choose to sit back and do nothing about it, you are going to see your profit margin flying right out the window. This is going to affect how long you are going to be able to stay in business and think about all of the employees that you have who are loyal and reliable. What will happen to them? Security cameras have been proven to be on the most effective tools of the trade for protecting your business for years and they are not going to stop any time soon. You can make sure that you have the right tools and the right equipment to becoming a victim. When you have the proper security system in place you will be able to stop a thief dead in their tracks; however, if they do manage to get away, you will have the proper security footage to catch up with them later on and recover what you lost in the process.

When you take the time to invest in a security camera you are investing in a lot more than just your business, you are also investing in your future and the future of your establishment. Your employees will thank you for making sure that they are protected and don’t have to feel safe in the event of a crisis or potential threat. Check into your new DVR security system today and see how much it can do for your business in no time at all. You will love the freedom that it is going to bring to the table. Contact Security Camera King today to find a DVR Motion Detection that’s right for you.

 

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SVS-54 Dual Power Wide Surveillance Camera

Written By:
Thursday, April 7th, 2011

The SVS-54 Dual Power Wide Surveillance Cameras are made by Veilux, a name known for extremely high quality products in the digital video security camera industry.  These cameras are the standard box camera type, with a dual power input capability.

The actual full name of the SVS-54 Dual Power Wide Surveillance Cameras is 540 TVL Dual Power Wide Dynamic Range Box Surveillance Cameras.  That’s a bit of a mouthful to swallow, but the cameras are every bit of what the label describes.

The SVS-54 Dual Power Wide Surveillance Cameras made by Veilux work off of 12 Volts Direct Current (VDC) or 24 Volts Alternating Current (VAC) hence the reference to “Dual Power.”  This is incredibly convenient in the event that you want to purchase this camera as an “add-on” camera to an already existing system, because the majority of digital video security cameras today operate on either 12 VDC or 24 VAC.  Since these cameras are dual power, they will operate equally well, no matter which of the two power systems you use.

These cameras are what are known as true day/night vision cameras as compared to an infrared illuminated camera that uses infrared Light Emitting Diodes (LEDs).  A True day/night camera such as the SVS-54 Dual Power Wide Surveillance Camera uses something called an IR Cut Filter to provide the day/night feature, instead of using illuminating infrared LEDs.  Cameras using IR Cut Filters are generally more advanced than IR LED types producing a much cleaner brighter, detailed image whether it is operating in day mode or in night mode.

The IR Cut Filter works by sitting in place in front of the CCD sensor during the day and blocks out stray infrared light from entering the camera.  This stray infrared light often causes distortion of the image and incorrectly displayed color characteristics.   In night mode, the filter is literally moved out of the way of the sensor (i.e. mechanically repositioned).  This allows all light, including visible and infrared to strike the camera’s CCD sensor.   Since the sensor is inherently sensitive to IR light, this allows the camera to “see” more in less light.

The IR cut filter and special sensor combination allow the SVS-54 Dual Power Wide Surveillance Camera to produce high quality, detailed video in bright visible light conditions all the way down to the lowest Lux (brightness) conditions.  Combine this with technology that produces up to 120 dB or dynamic range and that’s why this camera earns the title “Wide Dynamic Range” or WDR.

This camera also produces a high definition, highly detailed video image.  In fact the video image produced by the SVS-54 Dual Power Wide Surveillance Camera is 540 horizontal television lines (TVL).  This a fairly high-detailed resolution, especially for a camera that can operate without infrared illumination at incredibly lo Lux ratings.

Other features of the SVS-54 Dual Power Wide Surveillance Camera include On Screen Display, Motion Detection, and back light compensation.  These extra features contribute even more to the high versatility of this camera.

Which leads us to the question, “Where would you use an SVS-54 Dual Power Wide Surveillance Camera?”  The answer is just about anywhere.  Although this camera is an indoor camera, it can easily be placed in an outdoor rated enclosure and used outdoors as well.  The Wide Dynamic Range and extreme low light sensitivity makes this camera an excellent choice for used indoors or outdoors.

Mentioned earlier, the dual power function is another benefit that adds to its versatility.  Besides the fact that there are no worries about needing to convert this camera’s  power supply to meet DC or AC, the fact that it can operate on AC makes it an excellent choice for special long-range applications.  Direct Current has a tendency to weaken, or experience voltage drops, the longer the distance it is sent, primarily due to inherent resistance of the wire that carries the current.  (Unfortunately, this cannot be avoided).

However, AC has the opposing characteristic of being able to be shipped long distances without tremendous power loss.  Therefore, this camera is excellent for applications where the camera power supply must be run a long distance (several hundred feet for example).

At the time of this writing, Veilux is temporarily out of stock of the SVS-54 Dual Power Wide Surveillance Camera so it is on SCK’s discontinued list.  For a similar camera but with a high resolution, check out SCKs Product# SVS-60CDNRD.

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Security Video Cameras

Written By:
Wednesday, March 23rd, 2011

Security video cameras are one of three major components of today’s digital video security systems which also consist of a Digital Video Recorder or DVR and one or more monitors.  The digital video camera is an interesting piece of electronic wonder, and as technology continues to advance so do the features and abilities of the security video camera.

In this article, we’ll take a look at how a security video camera operates.  We’ll also take a look at some of the more common features and options that are available on today’s digital video security cameras.

Security video cameras are electronic based devices that transfer light images into electrical images that can be viewed on a monitor.   One of the key factors in accomplishing this is the electronic sensor that is used inside the camera to do the conversion.  Cameras make use of one of two different technologies with either one yielding the same end result.

 

These sensors are called a Charged Coupled Device or CCD and a Complementary Metal Oxide Semiconductor or CMOS.  The lenses focus the light image onto this small sensor chip (most range from about 1/4 inch 1/2 inch square).  The chip is sensitive to light energy in such a way that when light strikes the chip and electrical impulse is created that can be measured and used to construct a video image.

Ironically, even in digital security video cameras, the video signal that is created is originally analog in nature.   The signal is passed through a special Integrated Circuit or IC chip known as a analog-to-digital converter as well as a Digital Signal Processor or DSP before it is sent out the camera to the DVR.  In most systems the signal is sent along a cable (RG-59, CAT5, etc) from the camera directly to the DVR or monitor; hence the often used phrase “Closed Circuit TeleVision” or CCTV.

Once the video data reaches the DVR, it must be worked on some more by the DVRs DSP.  The data is gathered or compiled into a file called a digital video file.  Security video cameras create digital video files that can be played back by most personal computers and DVD players.  This digital video file is actually several digital photographs taken in raped succession over a very short time (usually around 30 photographs or frames per second or 30 fps).

The digital video file can quickly become several Gigabytes in size, especially when there are multiple cameras (which is usually the norm) recording at the same time.  There fore to make handling of the file easier for the processor and to get the maximum amount of time-recording per given storage capacity, the file is reduced to a fraction of its original size.

This is done by a COmpression/DECompression or CODEC utility.  The utility may be hardwired (usually an IC chip) or it may exist in the form of software.  Basically, a CODEC is a mathematical algorithm that finds a way to store repetitive data only once, thereby reducing file size while maintaining video quality.  Security Camera King’s DVRs all use the latest, most efficient CODEC known as H.264.

Security video cameras come in a variety of shapes, sizes, features, and price ranges.  Covering all of these variations is by far, beyond the capacity of this article, however we will attempt to try to cover some of the more popular characteristics.  If you would like additional more specific information on a camera variation, try searching our knowledge base for more information.

 

There are basically four types of security video cameras based on shape.  They are:

  • Box cameras;
  • Bullet cameras;
  • Dome cameras; and,
  • A variety of different hidden or disguised cameras that take the shape of the device they are built into.

These cameras are further made in one of three different styles based on where they are intended to be used.  These are:

  • Indoor cameras;
  • Outdoor cameras; and,
  • Indoor/Outdoor cameras.

In addition, cameras can come with a myriad of features.  Depending on the manufacturer and camera model, some features may be considered standard issue for the camera while others will be considered an option, usually with an additional cost:

  • Infrared night vision;
  • Pan-Tilt-Zoom (PTZ);
  • Motion detection;
  • Very high resolution output;
  • Audio capability;
  • Internet compatible;
  • Explosion proof; and,
  • Wireless.

Generally speaking, if you have a specific security video camera need, there’s one out there that can nicely fit the bill.

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Night Vision Wireless Security Camera

Written By:
Tuesday, January 25th, 2011

Tired of not being able to see things that go “bump” in the dark? If that’s the case, you need a night vision wireless security camera. These cameras take advantage of the latest technology in digital camera security systems, are easy to install, and are reasonably priced as well.

Can a night vision wireless security camera actually “see” in the dark? Well, indirectly the answer is yes. Although the camera doesn’t actually “see” in the dark, it uses infrared illumination to light the target area of the camera. This infrared illumination is actually invisible to the human eye, so we can’t see it, but the camera can. Before we get ahead of ourselves let’s back up and start at the beginning.

There are many types of digital video security cameras based on appearance and function. The night vision wireless security camera is one of those types that contains highly specialized features for highly specialized applications. Some of the other optional features that are available include the following:

• Pan-Tilt-Zoom or PTZ. This feature allows the camera to move “left and right” and “up and down” which greatly increases the field of vision of the camera. This camera can also “zoom in” on objects to enlarge their view.
• Motion Detection. Camera can come equipped with motion detectors that turn the camera recording on only when motion is detected.
• Audio Recording. Sounds can also be recorded as well as conducting two-way audio communication.
• Internet Protocol or IP ready. Cameras can connect to and use the Internet for networking.

Let’s keep the “focus” (pun intended) on a night vision wireless security camera. First, the camera operates by transferring light images into electronic impulses that can be measured to create digital video images. In digital video language, this transferring of images is normally referred to as “capturing.”

The night vision wireless security camera captures images by using a very special electronic sensor. There are actually two different types of sensors and although they capture images in a slightly different way, they both produce the same end result (a digital video image.) One of the sensors is a Charged Coupled Device or CCD and the other is a Complimentary Metal Oxide Semiconductor or CMOS.

It just so happens, that both CCDs and CMOSs are inherently sensitive to not only the spectrum of electromagnetic radiation we call “visible light” but are also sensitive to infrared radiation or “invisible infrared light.” (We call it invisible because as mentioned earlier, the human eye cannot see it.) Specifically, most night vision wireless security cameras are inherently sensitive to a band of infrared radiation called “near infrared radiation” or for our purpose, we’ll call infrared illumination.

So where does the infrared illumination originate? There are some small amounts that are emitted (or radiated) from objects, especially heat and light sources. However, a night vision wireless security camera normally provides its own illumination using an array of infrared Light Emitting Diodes or LEDs that surround the camera lens or are right next to it pointing in the direction of the camera’s field of vision.

The infrared LEDs use much less electricity than a typical filament light, and the illumination they emit can’t be seen by humans but can be detected by the night vision wireless security camera. There are some camera/systems that do not include LEDs around the lens but may use separate infrared LED “illuminators.” These illuminators can also be used with cameras that do already have LEDs to extend their range.

This brings us to an important point. Since the LEDs provide the illumination for the night vision wireless security camera, every camera has a range. Be certain before purchasing your camera that you know what range you will require and that the camera you are purchasing can capture images within that range.

Finally, as the name indicates, a night vision wireless security camera does not require a video transmission cable to be run from each camera to the DVR as other non-wireless systems do. The camera takes advantage of one of many different types of wireless technologies to send its images via radio waves to a receiver or a DVR with a built-in receiver. One example of this technology is 2.4 or 5.8 MHz technology; the same used for wireless land-line based telephones. Talk about making installation easy!

Contact one of our security experts via our on-line “Live Chat” or via telephone if you have any additional questions concerning a night vision wireless security camera.

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