EthoVision XT

Detection methods


At the core of EthoVision XT

The core function of EthoVision XT is the detection and tracking of an animal. It’s critical to accurately recognize the animal and distinguish it from its background. This is arguably the most important step in video tracking, since without recognition, there is nothing to track.

The detection algorithm in EthoVision XT is one of the major reasons why EthoVision XT is considered the best of its kind. Advanced tracking technology assures you of accurate and reliable results. Even under harsh conditions.

ethovision automatic detection rat water maze before
ethovision automatic detection rat water maze
 


Tracking models

EthoVision XT has several tracking models, meaning that detection and tracking of the animals is optimized to the species you are tracking.

  • Default model for any species
  • Default model for rodents
  • Model for rodents in case of occlusions
  • Model for zebrafish in case of occlusions
  • Model for other animal species in case of occlusions
 
 


Multiple Body Points detection

Multiple body points tracking is possible for both rodents and zebrafish (designed for top view tracking). Besides, several shape-models are available for rodents and other animals.

 


Deep learning-based body points detection

EthoVision XT 16 introduces a new deep learning technology to detect rodent body points. It is a kind of machine learning that can find structure in unstructured data, such as video images. 

‘Deep’ means that the trained neural networks are layered, so it learns to represent data at various levels. Low level data can simply be the colors, high level data is more abstract, such as ‘a tail’. 

The result is a much more accurate and recognition of the animal, resulting in a much more stable detection of the nose point, center point, and tail base of mice. This new technology will take any experiment that relies on multiple body points tracking to a higher level. Think of novel object recognition, nose poke/hole board tests, social preference testing, or 3-chambered setups.

Deep learning technology in EthoVision XT works on rats and mice with an even fur color and hooded (Long-Evans) rats.
Using deep learning requires  substantial computation power, you need a Graphics Processing Unit (GPU) that is able to sustain those computations.

 


Detection settings

Experimental set-ups differ and some might be more prone to background changes, creating a challenge for video tracking. For instance, continued tracking after your animal has urinated or reorganized its bedding can lead to mistakes that influence your results. That is why EthoVision XT builds in multiple detection methods for animal tracking, and you can fine-tune each method to your specific lab situation (Gray Scaling, Static Subtraction, Dynamic Subtraction, Differencing). 

 


Automatic detection settings

There are many choices and fine-tuning options in the detection settings, but we can imagine that you would rather spend your time on something else. So we have included automated detection settings. Based on your video file or live signal, EthoVision XT automatically suggests the optimal detection settings. All it takes is a few simple mouse clicks.

 


DanioVision detection settings

Working with DanioVision? EthoVision XT includes a dedicated subject detection method for DanioVision users who work with 96-well plates. Even unmoving larvae are reliably detected.