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Tetracam ADC Snap: multispectral discoveries

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 Tetracam, as the world´s leading company on fiel of advanced multispectral imaging technology, currently brings a new innovative marvel on the market. It´s called ADC Snap and with its light weight and tiny proportions it is obviously a perfect choice for the Unmanned Aerial Systems multispectral applications. If you are experienced in multi-spectral imaging issues, you probably know the ADC Micro camera. In fact, the ADC Snap looks very similar at first sight, because is has the same package design. However, the inside parts are surely different in some significant details and that´s what I would like to briefly present in today post. So, what´s the main difference of this camera? If you are considering to use this device for some UAV applications, you will certaily appreciate a 1.3 MPel electronic global snap sensor (1280 x 1024pixels) which is used by the ADC Snap as its speciality. Thereby, the entire image is exposed at the same instant in time in order to avoid rolling shutter problems.

The electronic “snap shutter” of the CMOS sensor in the ADC Snap is one of the innovations which distinguishes this particular device from the usual cameras of the ADC line. Moreover, the NIR (Near-Infrared Range) response is appreciably better and even pixels are way larger. This is more or less the fact what makes the ADC Snap to be a great choice for use with fast or low-flying UAVs. With this camera you can avoid any motion distortions in captured images and also reduce motion blurring in the image. Because of that is no problem to take required images with your drone at lower altitudes and high speed. In addition, it makes timing of the images with various mosaic building softwares much easier. The images are being produced directly off the sensor and removing of a dark current noise is done later while transferring the images to a host computer.

What else can be mentioned about this outstanding multispectral camera? Let´s have a look on some more technical details. ADC Snap sensor provides the captured images in 1280 x 1024 pixels (1.3 MPel) quality. The images are stored with metadata which help users with better orientation about the precise location of each image. Moreover, the metadata also contains for example altitude, course and GPS coordinates informations. After the whole mission can user simply remove the Micro SD memory card from the UAS and plug it into the computer, equipped by Tetracam accompanying software, which is called PixelWrench2. After the transfer can be data processed in demanded way. For example, PixelWrench2 enables extraction of various vegetation indices like NDVI from the gathered images, plenty of other editing and processing tools of RAW and DCM files. As you probably already know, the NDVI provide users a great opportunity to recognize information like a biomass, chlorophyll concentration in leaves, plant productivity and much more. As same as with the ADC Micro, the basic storage provides 2GB memory and can be extend up to 16 GB. There are three filters emitting the well known “fake colours” of green, red and near-infrared radiation equivalent, which provide first-class early warning signs of plant stress and their use as indicators of other specific plant and soil conditions. Generaly speaking, Tetracam multi-spectral imaging systems enable users to react to vegetation problems long before any indications visibly appear. Well, I guess that my brief introduction of this excellent multi-spectral imaging camera is about to finish. If you are going to purchase the ADS Snap for any of your UAV applications, I wish you a luck, creativity and a full contentment.

Source: tetracam.com

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