User profiles for Pietro Perona
Pietro PeronaCalifornia Institute of Technology Verified email at caltech.edu Cited by 155094 |
A bayesian hierarchical model for learning natural scene categories
We propose a novel approach to learn and recognize natural scene categories. Unlike previous
work, it does not require experts to annotate the training set. We represent the image of …
work, it does not require experts to annotate the training set. We represent the image of …
Scale-space and edge detection using anisotropic diffusion
A new definition of scale-space is suggested, and a class of algorithms used to realize a
diffusion process is introduced. The diffusion coefficient is chosen to vary spatially in such a way …
diffusion process is introduced. The diffusion coefficient is chosen to vary spatially in such a way …
[PDF][PDF] Caltech-256 object category dataset
We introduce a challenging set of 256 object categories containing a total of 30607 images.
The original Caltech-101 [1] was collected by choosing a set of object categories, …
The original Caltech-101 [1] was collected by choosing a set of object categories, …
Graph-based visual saliency
A new bottom-up visual saliency model, Graph-Based Visual Saliency (GBVS), is proposed.
It consists of two steps: rst forming activation maps on certain feature channels, and then …
It consists of two steps: rst forming activation maps on certain feature channels, and then …
Microsoft coco: Common objects in context
We present a new dataset with the goal of advancing the state-of-the-art in object recognition
by placing the question of object recognition in the context of the broader question of scene …
by placing the question of object recognition in the context of the broader question of scene …
The caltech-ucsd birds-200-2011 dataset
CUB-200-2011 is an extended version of CUB-200 [7], a challenging dataset of 200 bird
species. The extended version roughly doubles the number of images per category and adds …
species. The extended version roughly doubles the number of images per category and adds …
Pedestrian detection: An evaluation of the state of the art
Pedestrian detection is a key problem in computer vision, with several applications that have
the potential to positively impact quality of life. In recent years, the number of approaches to …
the potential to positively impact quality of life. In recent years, the number of approaches to …
Object class recognition by unsupervised scale-invariant learning
We present a method to learn and recognize object class models from unlabeled and
unsegmented cluttered scenes in a scale invariant manner. Objects are modeled as flexible …
unsegmented cluttered scenes in a scale invariant manner. Objects are modeled as flexible …
Learning generative visual models from few training examples: An incremental bayesian approach tested on 101 object categories
Current computational approaches to learning visual object categories require thousands of
training images, are slow, cannot learn in an incremental manner and cannot incorporate …
training images, are slow, cannot learn in an incremental manner and cannot incorporate …
One-shot learning of object categories
Learning visual models of object categories notoriously requires hundreds or thousands of
training examples. We show that it is possible to learn much information about a category …
training examples. We show that it is possible to learn much information about a category …