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October 01, 2021

Leaf Detection - Top K Techniques - Reads

Paper #1 PL@NTNET APP IN THE ERA OF DEEP LEARNING

Key Notes

  • Observations are stored within a NoSQL document storage called CouchDb
  • CNN architecture is the inception model
  • The number of species (i.e. classes) in January 2017 was about 10K and the number of training images about 332K
  • Species filtering is applied based on the checklist of species
  • activated within the app (e.g. West Europe, North Africa, South America, etc.)
  • By default, this checklist is automatically chosen according to the geo-location of the mobile device, but the user also has the possibility to select another one manually
  • Similarity Search - This content-based image retrieval is performed through a hashing-based approximate nearest neighbors search algorithm applied on top of the 1024-dimensional feature vectors extracted by the last hidden layer of the fine-tuned CNN

Paper #2 - Fine-grained recognition of plants from images

Key Notes

  • A number of approaches is based on the popular local binary patterns (LBP)
  • Fast Features Invariant to Rotation and Scale of Texture (Ffrst)
  • "One versus All" classifcation scheme is used for multi-class classifcation

  • The Foliage leaf dataset by Kadir
  • The Swedish leaf dataset
  • The Leafsnap dataset

Paper #3 - Neural Network Application on Foliage Plant Identification

Key Notes

  • Polar Fourier Transform that proposed by Zhang [18] has properties that are very useful for represents shape of objects, including leaf of plants
  • There are three kinds of geometric features involved as shapes features: slimness ratio, roundness ratio, and dispersion. 
  • Color features on a leaf can be extracted by using statistical calculations such as mean, standard deviation, skewness, and kurtosis

Leaf Type Classification


Paper #4 - An Online Algorithm for Large Scale Image Similarity Learning

Key Notes

  • Here we focus on a weaker supervision signal: the relative similarity of different pairs
  • we extract similarity information from pairs of images that share a common label
  • we extract similarity information from pairs of images that share a common label or are retrieved in response to a common text query in an image search engine

Paper #5 - Large Scale Local Online Similarity/Distance Learning Framework based on Passive/Aggressive

Paper #6 - Comparison of Image Matching Techniques 

  • Blob detection technique
  • Template matching
  • SURF feature extraction 

Paper #7 - Large Scale Online Learning of Image Similarity Through Ranking

Key Notes

  • OASIS is both fast and accurate at a wide range of scales
  • Similarity information is extracted from pairs of images that share a common label or are retrieved in response to a common text query
  • OASIS can be trained on more than two million images within three days on a single CPU
  • OASIS learned similarity show that 35% of the ten nearest neighbors of a given image are semantically relevant to that image
  • Algorithm that uses triplets of images
  • Color histograms are obtained by K-means clustering
  • Local Binary Pattern
  • LMNN - Large Margin Nearest Neighbor Classification

Paper #8 - Sparse online learning of image similarity

tf2_semantic_approximate_nearest_neighbors

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