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Construction industry in the purchase and installation of surveillance cameras techniques by grehh hernjer
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Construction industry in the purchase and installation of surveillance cameras techniques by GREHH HERNJER
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| Article Posted: 07/30/2011 |
| Article Views: 67 |
| Articles Written: 1951 - MORE ARTICLES FROM THIS AUTHOR |
| Word Count: 890 |
| Article Votes: 0 |
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Construction industry in the purchase and installation of surveillance cameras techniques |
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Business,Business News,Business Opportunities
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Surveillance camera equipment is critical to monitor the project. Select and install the thoughtful consideration to monitoring the screen or cause the issue are incomplete or not clear enough. Building entrance for selection and installation of surveillance cameras in-depth analysis and study, to provide readers with some advice, I hope to give you some help.
Monitoring camera device mode selection Into the building to ensure that any person can leave the face in a positive image import and export) at the same time this approach ease of installation, interior installation: most radical way to building entrances and exits of surveillance cameras installed in the room. This approach has the advantage of optional monitor the direction of installation (the same building should consider monitoring the direction of building consistency and closure. Wiring is simple, easy to maintain. Note that the choice of surveillance cameras and equipment position to consider the outdoor light on the monitor the impact of the camera. If the field of view toward outdoor surveillance cameras installed, will have to choose with automatic aperture, strong surveillance camera backlight compensation. on the complex light Environment Import and export will have to use wide dynamic camera, light inhibition of surveillance cameras, or even increase the added light.
Camera or positive with a positive image import and export camera shot. This approach has gradually been accepted and used outdoor equipment: outdoor pole or attached to carrier device installed surveillance cameras. And obtain better imaging results. This approach has the advantage of natural day light outdoor light environment facial full facial image real, structured, can capture more detailed features of the human body. Ambient lighting at the entrance to a single environment where lighting is also available with plenty of satisfying night portrait. This kind of installation, according to the environmental illumination conditions at night can choose low-light surveillance camera surveillance cameras or general illumination. The drawbacks of such devices means devices by landscape position limits, wiring a little trouble, some items need to involve cutting the road, need to consider outdoor landscape environment. Some building entrances and exits can not be used by the environmental constraints in this way.
Proposed preferred way of outdoor equipment, as permitted under the built environment. Also do import and export of outdoor lighting at night. Another view from the King
Shot Regulation Image can be divided into vision, medium shot, close shot, close-up. Complexity of building entrances and exits as light from the Scene of view. Point of demanding, so I suggest all of high quality auto iris manual zoom lens. Monitor building entrances and exits on to monitor the subject is the building of the staff and activities into objects, so in most cases, the entrance walls, other structures, the modeling should be concerned are not the focus. Staff to pursue the most clear features of the image. Lens focal length adjustment so doing reduce the screen should be invalid as far as possible local (wall, etc.) as possible so that a greater proportion of the human body in the screen, but should also pay attention to door frames, etc. defining the marginal revenue in the screen material to ensure that the population of all into the picture, this is what should choose an effective close-range monitoring mode.
Device position on choice of light
Indoor unit has a sequence of view from the light source light, backlight, side light, etc. Some installation location.
Staff positive light uniformly, smooth and just refer to the direction of light radiation field of view of surveillance cameras in the same direction. No shadow, color restore more normal. But if the light is too strong, it would seriously damage the appearance of the main level. Backlight and cis-ray contrast, the direction of light projection and monitoring cameras in the opposite direction, the main form is characterized by photo Figure Positive light by less than the main light, the main positive illumination and illumination of the background and vision for the disparity, the details of the main positive total loss, facial black, can not identify image features.
Most side light environment when the indoor unit. Side light is the light irradiation direction of the main characters on one side, the side edge is common. Half of the main characters of this light so bright, half cast a shadow, shadow-level people will be affected by the loss, people look strong chiaroscuro, color reduction can still be.
If you can not avoid the surveillance cameras can be used to increase along with wide dynamic lighting. Note strong backlight illumination when the portraits of the main positive contrast and background illumination is far greater than any wide-dynamic monitoring of existing dynamic than the camera. Most surveillance cameras Wide dynamic Technology Implementation of enhanced facial details, select the indoor unit should be to prevent the presentation of the device caused by the backlight position. However, smooth light environment can not match the level and detail of imaging.
Angle surveillance cameras installed
Location based devices were divided into: flat point of view, overlooking the point of view, Yang angle. I am an expert from China Telecommunications, usually analyzes all kind of industries situation, such as devine medical supplies , motorized wheel chairs.
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