Testing Pelco's Surevision CamerasAuthor: John Honovich, Published on Jan 09, 2012
Undoutedbly, Pelco was a leader in analog CCTV. Years ago, integrators would have likely choosen Pelco as the most respected company in the industy. Yet times have changed.
In the last decade, with a sharply shifting industry and a company in transition, Pelco's prominence in the market has clearly fallen. During that time, Pelco was acquired by international conglomerate Schneider Electric while IP camera adoption has surged. Equally troubling, Pelco's initial efforts into IP have not been especially impressive and many, including us, have been disappointed with their existing offerings.
Pelco's New Effort - SureVision
Starting in 2011, Pelco refocused its efforts on a new IP cameras technology called SureVision humbly calling it a "revolutionary approach to video security", a "new era of image quality" that "set the bar for best image quality." Specifically, Pelco claims that SureVision "combines Wide Dynamic Range along with Low Light and Anti-Bloom capabilities into one highly intelligent technology." Suffice to say, Pelco is going all out on this one.
Given the (self) hype, we decided to test SureVision against previous generation Pelco cameras and some of the best existing cameras in the industry. From Pelco, we tested the 1.2MP SureVision camera (IXE10LW) and the previous generation IXE20DN. We tested them against leading performers from Axis, Bosch and Sony.
We tested 3 primary scenarios:
- Low Light - at ~0.2 lux, we compared details captured and overall brightness of the 3 Bosch cameras against 6 competitor's cameras
- Wide FoV Daytime - at ~80 foot wide FoV, we compared details captured of all cameras
- WDR - in a loading dock facing the sun, we compared details captured of all cameras at both a narrow darker area and a wider brighter area
Our test results show that SureVision is a big step forward from Pelco's historical efforts and is competitive in many areas yet still suffers from notable usability and artifacting issues. We dig into the images, video and analysis inside.
Here are our key findings from the Pelco Sarix test:
- The Surevision's combination of strong WDR and low light performance was competitively impressive and rare.
- The Surevision outperformed the non Surevision (IXE20DN) model in nearly every meaningful dimension (including cost).
- The Surevision was the brightness megapixel camera we have tested at night yet it also displayed an extraordinary amount of visible noise. This noise level cannot be reduced as no user controls over gain levels are provided.
- The Surevision demonstrates some abnormal image artifacting especially with sudden changes in lights or wide contrasts in lighting at night.
- The Pelco Sarix cameras have a number of usability issues that might be problematic or ignorable depending on user preference.
- The bitrate of the Pelco Sarix cameras hardly varied from the set target bit rate and acts essentially as a CBR only stream. 'True' VBR is not available.
The Pelco SureVision 1.2MP camera should be considered among the top tier of megapixel cameras. With a fairly reasonable price point (~$750 w/o lens) and strong WDR plus low light performance, it is a strong all around performer. However, given the potential image artificating, usability concerns and streaming limitations, some users may find issues in using this camera.
However, for those choosing Pelco, we strongly recommend the Surevision 1.2MP camera over the previous generation IXE series. In our head to head shootout of the Surevision 1.2MP camera with the 2MP IXE version, the Surevision had significantly better overall imaging performance and only slightly worse at very wide FoV (where the adidtional resolution would most likely create an advantage). Moreover, the Surevision 1.2MP is actually less expensive than the 2MP IXE model by $100-$200.
Usability and Configuration
We saw a number of potential usability problems in the configuration and use of the Sarix cameras. Here they are:
- Accessing video via the web interface requires separate installation of QuickTime and/or the Pelco Media Player. This can cause delays and problems in displaying live video. This is significantly more cumbersome than even the common requirements of installing ActiveX controls (which are not available for Sarix).
- The cameras refocuses quite frequently and the sound it makes when refocusing is quite loud. Watch and listen to the video to see for yourself.
- The cameras do not offer manual gain control optimization. This can be an issue for advanced users who want to turn off or limit the gain level (e.g., no higher than 12dB, etc.) to reduce noise generated. Given the camera generates a lot of visible image noise, this should be kept in mind.
- No integrated help is available on the web interface. One needs to manually access the camera's user manuals to get information on commands / setting options.
The video shows these elements in action. I strongly recommend you watch to better appreciate:
Pelco vs Pelco: Surevision vs IXE20DN Camera
Our first image comparison is between the two Pelco cameras tested. Pretty much, you can see in each comparison that the Surevision 1.2MP delivers superior image quality to the IXE 2MP:
The last image comparison in the bottom demonstrates a weird issue with the IXE model we saw continuously. When faced with even moderately bright direct lighting, the IXE tended to be oversaturated.
Low Light Performance
In the first of the group comparison, we show a full screen view in low light conditions:
The main thing that strikes us is how bright the Surevision camera was. It is brighter than the Bosch SD camera in some sections of the image.
However, the advantages are not as significant when we digitally zoom into the subject's faces:
When looking up close, the increased digital noise of the Surevision camera obstructs viewing facial details, allowing the Bosch SD and 1080p to deliver slightly more details. That noted, the Surevision still captured more details than any of the other megapixel cameras.
Wide FoV / Long Range Performance
In this scene, we had a subject 80 feet away from the camera at an ~80 foot wide FoV:
This is the one scene where the Pelco IXE 2MP is slightly better than the Surevision. However, both the Pelcos are in line with the performance of the 720p cameras in the group but behind that of the 1080p Bosch and the 3MP Sony.
Here we have a WDR scene in a narrow field of view / dark region:
The Surevision does quite well with only the Sony CH140, the 'winner' of our previous WDR shootout in the same performance level.
Here we have our subject move farther back in a brighter region at a wider FoV delivering similar performance as the first scene:
Image Quality Artifacts
In the final section of this report, we look at some image quality artifacts that we have seen periodically with the Surevision camera. The patten we saw is that the artifacts are most significant when dealing with bright light sources (like lamps or headlights) or when lighting levels change rapidly.
The images below show some examples of outdoor night image quality.
In the first row, notice how street lights strangely turn blue and the road turns reddish/pinkish. We believe the road color is due to blurring of cars taillights. In the black and white image in the first row, you can see how the rendering of the street lights creates an artificial looking scene.
The last row is likely the most representative of an outdoor shot. Here we avoided street lights and had an angle of incident that did not allow vehicle headlights to shine into the camera directly. While you see some artificating on the sign and the headlights, overall it's quite modest.
Here is a video that shows some of the issues we saw in action. This is worst case scenario and represents an uncommon camera setup with the camera directed straight on to oncoming traffic. This does capture some potential issues to be aware of:
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