International Journal of Computer Vision

, Volume 88, Issue 2, pp 303-338

First online:

The Pascal Visual Object Classes (VOC) Challenge

  • Mark EveringhamAffiliated withUniversity of Leeds Email author 
  • , Luc Van GoolAffiliated withKU Leuven
  • , Christopher K. I. WilliamsAffiliated withUniversity of Edinburgh
  • , John WinnAffiliated withMicrosoft Research
  • , Andrew ZissermanAffiliated withUniversity of Oxford

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The Pascal Visual Object Classes (VOC) challenge is a benchmark in visual object category recognition and detection, providing the vision and machine learning communities with a standard dataset of images and annotation, and standard evaluation procedures. Organised annually from 2005 to present, the challenge and its associated dataset has become accepted as the benchmark for object detection.

This paper describes the dataset and evaluation procedure. We review the state-of-the-art in evaluated methods for both classification and detection, analyse whether the methods are statistically different, what they are learning from the images (e.g. the object or its context), and what the methods find easy or confuse. The paper concludes with lessons learnt in the three year history of the challenge, and proposes directions for future improvement and extension.


Database Benchmark Object recognition Object detection