Tag: ssd

• Anchor Free Object Detection (15 Sep 2019)
  

  The most sucessfull single stage object detection algorithms, e.g., YOLO, SSD, all relies all some anchor to refine to the final detection location. For those algorithms, the anchor are typically defined as the grid on the image coordinates at all possible locations, with different scale and aspect ratio.

• Pyramid in Neural Network (24 Jun 2019)
  

  Pyramid is a widely used technique in vision tasks. It applied when you want to obtain features from different scales. There are generally two types of pyramids available:

  • image pyramid: where image pyramid is generated first and then feature extract is applied on each level of pyramid. Image pyramid is a very effective way but has high computational cost.
  • feature pyramid: feature is extract on the original image and next level of feature is built on the feature of previous level. Feature pyramid may reduce the computational cost by reusing the feature from lower level.
• Object Detections (02 Apr 2019)
  

  Here is the comparison of the most popular object detection frameworks.