ViDi Labs is a consulting company specialising in Closed Circuit Television (CCTV), Digital Imaging and Testing, Graphic Design and Photography.
We have experience and know-how in designing CCTV systems and quality testing. We conduct training on various imaging and CCTV topics.
We offer specialised test methods and tools to help evaluate analogue and digital CCTV systems quality.
first CCTV SD & HD test chart in one!
This chart is designed for both Analogue SD cameras, as well as HD and
Megapixel cameras (A$500+shipping).
Download the latest Setup and Usage manual here.
Test chart measurement procedure of moving objects published !!!
Sharp and clean images are only possible when the viewed scene is still and has no moving objects.
In the world around us there is constant movement which affects the clarity and sharpness of objects. It is impossible to have sharp recorded footage even with the best camera and lens, without understanding the effect of moving objects in the recorded video.
With this new measuring procedure, ViDi Labs makes it possible to quantify parameters that influence bluriness of the recorded moving objects.
Measure the effect of moving objects on camera image ("object blur due to pixel shift effect").
This is the latest procedure with the ViDi Labs SD/HD test chart which allows determining the pixel blur due to moving objects.
The illustration and formula on the left are produced by Vlado Damjanovski and can be used to determine the effect of moving objects of any speed and at any distance on a camera recorded image. It can be applied on any type of camera, be that IP CCTV, still image DSLR or a motion picture camera.
Typical examples are moving vehicles where traffic authority or security operators want to determine the number plates, or perhaps, recognise a face of a person running in front of a camera, or in sports action recording.
The photos on the left are a practical example of the effect of an oscillating test chart, the calculated pixel shift and it's appearance in an exported frame, which is in accordance with the derived formula.
You can produce similar measurements by ordering the test chart, above.
For the complete setup instruction download the latest Setup and Usage Manual.
|There are four test chart snap-shots from four different lenses shown
on the left.
For obvious reasons there are no lens manufacturer's names mentioned.
All lenses are claimed to be mega-pixel lenses.
The same camera is used throughout and all camera settings are identical. The angle of view, compression settings and illumination are also identical.
All lenses are focused for best possible image.
Even though the exported images are reduced and cropped (for the purposes of displaying on the web site) the image quality is obviously different, the top one being the best, and lowest being the worst.
All lenses are vari-focal, mega-pixel and within a similar price range.
Lens quality may be one of the most important factors in obtaining the best possible image for your cameras.
The ViDi Labs test chart is one of the easiest and optimal methods for objective comparison and testing.
Details of a HD 720p camera with 1.3 Mb/s H264 compression setting.
Note the faces details (of the "720" image) and the non-continuous gray-scale.
Details of a HD 720p camera with 6.5 Mb/s H264 compression setting.
Note the faces details (of the "720" image) and the continuous gray-scale.
Faces details of a HD 1080 camera with 6.5 Mb/s H264 compression setting.
Pixel-bars and gray-scale details of a HD 1080 camera with 6.5 Mb/s H264 compression setting.
Faces details of a HD 1080 camera with 13 Mb/s H264 compression setting.
Pixel-bars and gray-scale details of a HD 1080 camera with 13 Mb/s H264 compression setting.
|Order a CCTV Test
chart (A$300+shipping) for evaluation of
your analogue Standard Definition cameras and systems.
Download the Setup and Usage manual here.
||CCTV products and
See a sample report here
|CCTV System design, analogue and/or digital, with drawings.|
|CCTV Control Room design to suit
Click here to see a low resolution sample movie.
conduct CCTV Seminars,
based on the latest CCTV book,
covering the complete CCTV technology.
Ask us for a specific in-house seminar for you.
Vlado's "Poems with pixels" web site and
an autographed photograph from his web site