Tag Archives: camera

How To Achieve Effective Motion Detection

SecuritySpy’s motion detection algorithm employs many techniques in order to accurately detect real motion events while minimising the rate of false-positive detections. But besides an effective algorithm, there are many choices about the setup and configuration of your video surveillance system that will help achieve reliable motion detection – these are outlined below.

1. Camera Angle

How you position and point the camera, as well as the focal length of the lens (how wide-angle it is) makes a big difference to the effectiveness of motion detection. The key points to consider are as follows:

  • The activity you want to capture should be relatively large in the frame. Don’t use a camera with a very wide-angle lens, as this will make objects and people appear very small – too small to trigger motion detection or make out any important features such as faces.
  • Point the camera downwards and don’t include any sky in the frame. At certain times of the day the sun may glare into the camera, which would impair its ability to render the scene with good enough definition, and may even damage its sensor.
  • Include just the area you want to capture in the frame; don’t include any irrelevant areas as this simply wastes the resolution of your camera.

Here is an example of a bad camera angle for motion detection:

Bad Camera Angle

Bad Camera Angle For Motion Detection

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Raspberry Pi Camera to SecuritySpy

Below is a guest post by one of our users, Wayne Jacobsen, who is using a Raspberry Pi computer to turn a USB webcam into an IP cam that can stream video to SecuritySpy, in order to expand his Mac video surveillance system. Wayne is an Art Glass artist  – you can see some of Wayne’s work on Pinterest. Wayne has contributed the following description of his setup:

The Raspberry Pi can make a nice security camera in a SecuritySpy system with surprisingly little effort. I wanted a way of seeing what temperatures my kilns were, especially when they were cool enough to open and take the glass out. I had a Raspberry Pi (RPi) equipped with USB WiFi dongle and an old Logitech QuickCam Pro 9000 webcam sitting around from my old PC days. A little research on the web led me to many ways to use the RPi with the webcam and I used the instructions on this page as the basis of my setup. Someone has done all the software development work for us in a program call Motion.

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10 Recommended IP Cameras

NOTE: this post has been superseded by our newest post 10 Recommended IP Cameras 2019.

The IP camera market is changing rapidly, and while we do make some specific camera recommendations in our SecuritySpy Installation Manual, we are always coming across new noteworthy cameras, and there are simply too many to list in the manual. So we have put together our current 10 recommendations for network cameras in this blog post – the cameras described here are in no particular order (they are quite varied in terms of cost and feature set, which makes them difficult to rank in a “top 10” list), however they are all cameras, due to their impressive collections of features, that we recommend to our customers. All the cameras featured here are capable of MPEG-4 and/or H.264 compression, which can be directly recorded by SecuritySpy for optimum quality and efficiency.

1 Dahua Technology IPC-HFW2100

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Adding a Camera Unknown to SecuritySpy

We have an extensive list of cameras that are known to be compatible with SecuritySpy. All these cameras have profiles built into SecuritySpy, making for a quick and easy setup in most cases.

However, it’s a fast-changing market and new cameras are continuously being released. While we do our best to release frequent updates that support these new cameras, it’s a difficult task. You may find yourself intending to use a particular camera that is not yet on our list – this blog post will show you how.

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