What Does Wdr Mean On A Camera

15 October What is WDR? Wide Dynamic Range

When we have to baby-sit a big space, we need to provide ourselves with a good security organization. Nosotros take already said in previous posts that video surveillance cameras are the key axis of whatever security installation. They are the eyes that monitor and control every corner of our facilities, and those that permit us to detect intrusions and other dangers. With the cameras we know what is happening. But the cameras must have the latest technological advances. In this post we explicate what WDR is, one of the most interesting technologies that we will find in the best video surveillance cameras.

What is WDR?

WDR is the acronym for Wide Dynamic Range. It is a technology that some video cameras have and that serves to recoup for problems with exposure to calorie-free. With WDR applied science, the camera compensates for images where there are dark and bright areas, in which in that location is a neat decompensation and we cannot run into sharp images if nosotros utilise a normal camera. With this applied science, a balance between brightness and darkness is achieved, notably improving image quality and obtaining a more uniform issue, thank you to this dynamic treatment of light.

An instance of the use of this engineering is found in the following situation. When a camera is directed towards a window, nosotros tin find areas in which more or less light enters. With a normal camera, without WDR, we will run across a part of the image very dark and another very bright, with which many details volition be lost. This can be a security breach, since we can lose part of what happens in that darker surface area. With WDR technology a balance is accomplished and nosotros meet the entire area of that window with a uniform lite level, without loss of detail.

How does the WDR work?

With WDR technology, the camera lens uses different shutter speeds to allow more low-cal in some areas of the paradigm and less low-cal in others, those that are brighter. The sensor's exposure to light it receives from outside is controlled to achieve a compensated image.

In lighter areas, a higher speed is used so the sensor is exposed to calorie-free for less fourth dimension.
In darker areas, the shutter speed is slower, causing the sensor to capture more low-cal for a longer fourth dimension.
Both images are combined to obtain a concluding image with intermediate lighting.

If we have a camera that is monitoring from inside a edifice through a window, the areas further away from the glass will announced lighter, while those that are closer will appear darker. With double exposure, thank you to WDR technology, we will accomplish a sharp and balanced image in which all the infinite volition appear with the aforementioned level of illumination.

Cameras with WDR are ideal in unlike situations that require very high quality monitoring. Some examples can be:

When the camera points from inside a edifice to the outside (driveways, patio, street). Here, we volition find areas of dark calorie-free, light changes due to the movement of the sun, etc.
When the camera has to come across through drinking glass doors or windows where there are usually many reflections that preclude uniform illumination of the scene.

WDR cameras tin can exist an platonic solution to avert security breaches that occur in those areas with difficult lighting. Having dark areas mixed with very light areas makes conventional cameras ineffective. Here, it is necessary to make a replacement of cameras if they take not been planned from the starting time. This reinforces the principle of the importance of security organisation maintenance: if nosotros practise not take a maintained and updated security organization, we will not have 100% security. In many places, these security cameras exercise not exist for the simple reason that when the installation was designed they were non yet available. Therefore, we accept to have a specialized maintenance that updates our security equipment.

Truthful WDR cameras and WDR Digital (DWDR) cameras

When choosing our surveillance cameras with WDR technology, we have to exist careful. Apart from the typical differences between brands and models, we will observe 2 cameras that, although they may seem the aforementioned, are not: cameras with TRUE WDR technology and WDR DIGITAL.

True WDRs employ the technique of combining unlike shutter speeds, while Digital WDRs work using a software compensation technique.

Cameras with truthful WDR (or truthful WDR) capture 2 images with different light exposures and merge them into a third paradigm, compensating for calorie-free intensities to reach an optimal overall illumination result. This natural process is replaced past computer compensation in digital WDRs. Hither, a single image is made that is digitally and automatically retouched.

Cameras with true WDR capture 60 frames per 2d to attain that cease result. To do this, they require a greater capacity for paradigm processing. For this reason, True WDR cameras, although more expensive, accomplish better results.

This is 1 of the questions to ask your security installer when designing the video surveillance installation: what type of WDR camera are we going to buy?

The importance of having an alert receiving centre

Video surveillance cameras are essential for the security of our edifice, just nosotros cannot cease this commodity without emphasizing the importance of having a good warning receiving center. This will accept care of verifying the alarms and false alarms that may occur, mobilizing the necessary resources to nourish them properly.

In this postal service we have tried to explain what WDR is, one more innovation in a changing sector that does not stop evolving to face the increasingly sophisticated strategies of organized crime. And information technology is that a security installation that is not properly maintained, or that is not updated with the latest engineering, will not be prepared to fulfill its mission.