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FAQ |
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Q. What is the difference between AVISTA-100 analytics and existing analytics products in the market place? |
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A.
AVISTA-100 is a smart IP camera with embedded analytics. AVISTA-100 is a self-contained unit. It includes the imager as well as the ''intelligence'' and related I/O capabilities. Because this format resembles the format of many intelligent sensors, these products are often referred to as ''vision sensors.'' More often than not, however,
a vision sensor has a limited and fixed performance envelope, while the AVISTA-100 Smart Camera has more flexibility or tools, inherently capable of being programmed to handle many imaging algorithms and application functions.
The main advantages of AVISTA-100 over existing DVR/NVR based analytics can me summarised as follows: |
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Lowest Network Load - Processing is done on the camera which results in the shortest reaction times. |
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This also alleviates the workload for any recording devices in the system and makes "event-driven surveillance" possible; that is, unless activity is detected in the scene, no video (or only video with low frame rate) is sent to the operator or recording system. |
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Integratability – Infinitely scalable and highly customisable to suit any environment. |
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Reliability - With fewer moving components (fans, hard drives) and lower temperatures, Smart Cameras are more reliable and offer the higher durability than DVRs. |
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Accessibility – Remote administration and/or viewing coupled with online updates and upgrades of on-camera software. |
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Simplicity - Software tools available with Smart Cameras are of the point-and-click variety and are easier to use than those available on DVRs. Algorithms come pre-packaged and do not need to be developed, thus making the Smart Camera quicker to setup and use. |
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Cost - Smart Cameras are generally less expensive to purchase and set up than the DVR solution since they include the camera, lenses and processing. |
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The AVISTA-100 has a processor at each inspection point. This gives a network of AVISTA Smart Cameras a distinct speed advantage over a single processor system. Ethernet allows the cameras to be easily managed from a single PC on the network and eliminates problems with PC/DVR hardware compatibility and operating system bugs. AVISTA-100 is a compact units, whereas a PC/DVR analytic system comes with a lot of ''baggage''. Even the operating system (frequently Windows or Linux) has a lot of baggage built into it. The baggage is a disadvantage in control, automation and mission critical security applications. AVISTA-100 Smart Cameras have a definite advantage, and they should be considered when selecting a security and surveillance analytic based vision system. |
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Q. Does analytics affect the image quality? |
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A. Not at all. The AVISTA-100 does not compromise image quality over analytics. They are two separate functions.
The AVISTA-100 uses MJPEG standard for image compression with embedded watermarking; maintaining 3.1.
Mega pixels image resolution with low noise performance. It is possible to use the rtsp protocol for media streaming over http protocol to increase bandwidth efficiency for continuous recording. |
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Q. I cannot use other application except of motion detection. |
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A. You have a licensing problem. The AVISTA-100 comes with standard license for activity detection, motion detection. Please contact our customer’s service department for more details about analytic packages. |
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Q. What is the recommended frame rate for running analytics? |
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A. The AVISTA-100 smart camera is 3.1 Mega pixel cameras running at a maximum of 12.35 frame/second at full resolution. It is recommended to set the minimum frame rate to 10 fps for VMD application. There is many ways to increase frame rate, please refer to camera manual. When running the camera at a high frame rate, be aware that camera fast frame rate will have an impact on the VMD. Make sure that you adjust VMD setting in order achieve an acceptable FAR/DR. |
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Q. Will motion detection work with PTZ? |
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A. Yes, if required as a customized application. However, it is recommended when the field of view is limited. AVISTA-100 is a 3.1 Mega pixel camera; it is possible to have a 120 degrees angle lens that will provide a large field of view. When motion is detected the camera will automatically zoom/pan on the moving object. |
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Q. How can I adjust the Automatic Exposure Control in order not to affect VMD? |
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A. This will be set at the qualification stage. If there is slow and constant lighting change, increase the “Bg frames” in the VMD menu. That will give more time for the image background to settle. Adjust sensitivity in order to reduce FAR. Calculate the right field of view and set the right minimum object size to detect, a wide angle lens is recommended with medium to large value for minimum object size (cars, people). Make sure that the ROI is well isolated from sources of false alarms. |
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Q. I have video RTSP streaming on but I cannot adjust settings of VMD. |
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A. Stop streaming first and then adjust VMD. |
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Q. Why do I get multiple events when people walk in front of the camera? |
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A. Analytics has no understanding of “people” or “walking” and will produce events when, for example, it detects motion. The number of events generated for a single incident can be controlled using the “bg frames” and “Ref frame delay”. |
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Q. Why do I have to tune analytics? |
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A. Every situation is different. You need to instruct Analytics what to do by tuning the settings. See Qualifying Analytics. |
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Q. What is the smallest region of interest I can set? |
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A. It is possible to set a region of interest with only a single detection cell. However, this is not recommended. See Installation Tips in the user manual. |
