Finding Surprises: Daily Camera Summaries

  • June 13, 2011
  • Adam Beguelin
Daily summary of driveway camera If you have a surveillance camera on Sensr.net, you’re probably familiar with the daily view. This shows each hour of the day, an image count for how many images we stored for that hour, and a thumbnail image that represents the hour. It turns out we’re pretty good at picking the image to show for the hour. I’m often surprised at when I look back at a day and notice something interesting that I want to delve into. Read More

Tuning Sensr.net Motion Detection

  • April 20, 2011
  • Adam Beguelin
Too much information

Too much information

At Sensr.net we’re trying to strike a balance between storing everything and storing what makes sense.

A typical camera sends us a few frames per second.  Our servers process these images and when we detect motion, we save the related images and organize them into the camera view.

Sometimes things can get out of whack if your camera has a lot of motion.  The way to fix this is to adjust the sensitivity of the motion detection algorithm that we use on your camera.  You can adjust the sensitivity of the motion detection by changing the setting in the edit page for your camera. (See the screenshot below.)

If you’re getting too many images, say more than a 500 per hour, you should consider lowering the sensitivity of the motion detection.  For most cameras a setting in the 3-5 range seems to work well.

We have our limits. While we try to save everything, we do limit cameras to 600 images per hour.  This means that if you set the motion sensitivity too high, you’ll blow through your quota of 600 images before the hour is up.  In this case you might miss some important motion events.  Say you use up all 600 images in the first 10 minutes, then Uncle Henry slips on a banana peel at 20 minutes into the hour, you’ll miss all the fun.

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D-Link DCS-932L Works Great on Sensr.net

  • April 16, 2011
  • Adam Beguelin
The D-Link DCS-932L night vision camera is easily set up on Sensr.net, and has great daytime colors as well as night vision image quality.

Accurate Daytime Color

D-Link has a new night vision camera called the DCS-932L.  This camera is very similar to their DCS-930L except that it does night vision.

Most night vision cameras in this price range have really bad daytime colors.  The DCS-932L doesn’t have this problem.  The night vision works great and the daytime images are also vibrant and accurate.

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