Rotation-robust math symbol recognition and retrieval using outer contours and image subsampling.
Siyu ZhuLei HuRichard ZanibbiPublished in: DRR (2013)
Keyphrases
- image retrieval
- geometric distortions
- symbol recognition
- image data
- image description
- image noise
- similarity matching
- image content
- multiscale
- input image
- geometric transformations
- single image
- illumination change
- image segmentation
- image features
- image analysis
- image transformations
- edge map
- edge detection
- invariant features
- minimal surface
- object matching
- keypoints
- partial occlusion
- feature selection
- object pose
- watermarking technique
- affine distortion
- image collections
- segmentation algorithm
- active contours
- image classification
- rotation invariant
- affine invariant
- test images
- contour extraction
- relevance feedback
- high resolution
- image processing
- data mining