Detecto is a learning-based object detection FPGA IP core, developed for embedded vision applications. The algorithm follows a discriminative approach: it combines a HOG-based descriptor and a SVM classifier. HOG (Histogram of Oriented Gradients) is a descriptor encoding the object structure. SVM (Support Vector Machine) is a non probabilistic binary linear classifier. The core support multiple scales to detect object moving in an arbitrary range of distance. The core is provided with a built-in pedestrian detection classifier trained on a wide range of automotive scenarios. User-defined classifiers can be loaded via software API.

Examples of object models are pedestrians, vehicles, traffic signs, animals, etc. Multiple SVM blocks can be instantiated to detect different objects in parallel. eVS provides software tools and technical support for training classifiers on specific customer application.

Core structure

A detection window slides the input image. For each window position the HOG signature is computed and classified to establish if it is the target object or not.

Post-processing and distance estimation

The core is provided with drivers and an embedded software library in C code implementing post-processing functions necessary to group together overlapping detections, track the objects and compute their distance from the camera. The detection range depends on the imager and camera lens: with 1Mp @30fps camera, detection approximately covers a range of 1-10m using 180º FOV or 2-40m using a 50º FOV.

Detecto Brochure

Key Features


  • Advanced HOG/SVM object detector for camera-based video systems
  • Supports Spartan®-6 and Zynq®-7000 Xilinx® FPGA
  • ARM® AMBA® AXI4 bus compliant
  • Supports resolutions up to 4096x4096
  • User-defined classifier can be loaded run-time via software
  • Up to 4 SVM classifiers in parallel to perform different objects detection simultaneously
  • Run-time variable image size
  • Support for input image pyramid
  • High Input Data Rate; > 120 Mpixel/sec
  • High Throughput; >7.6 GMAC/sec for the classification stage
  • Fully embedded into Xilinx EDK and Vivado

Applications

  • Driving assistance systems
  • Video surveillance
  • Robot navigation
  • Assistive technology for visually impaired
  • Contents based indexing
  • Advanced human-machine interface
  • Biomedical imaging
  • Machine vision

Video demo

Purchase

Detecto can be evaluated within the logiADAK Automotive Driver Assistance kit.

For any technical details or information about evaluation and licensing you can refer to our technology partner Xylon d.o.o. that is authorized to supply Detecto (named logiHOG) under the logicBRICKS™ brand. Click here to learn about Xylon's solution for the Pedestrian Detection. 

 

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