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LaRank vs OLaRank

Synthetic data with dimensions $[250,2]$.

Results (train/test):

LaRank .992/.964

OLaRank online manner: 0.552, After learning 0.964/0.956.

#online ssvm #ssvm #larank

Winner-takes-it-all multiclass svm using structured output SVM. - Gist is a simple way to share snippets of text and code with others.

#svm #multiclass svm #structured output

Loss functions

Hinge loss $$\max \{0,1-y_n w^T x_n \}$$

Log loss $$\log [1+ \exp{(-y_n w^T x_n) }]$$

Exponential loss $$\exp{(-y_n w^T x_n) }$$

Object localization $$ \Delta(y,y')=1- \frac{|y \cap y'|}{|y \cup y'|}$$

#svm #loss function

Rotational invariance

#sparse invariant

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Rotational non-invariance

#sparse tracker #sparse decomposition #tracking

Exploratory analysis for COSFIRE operators vs sparse portraits.

#cosfire #sparse portrait

Exploratory analysis of COSFIRE filters on sparse portraits

Problem: find a way how COSFIRE filters could detect the object in a robust way?

what does define a good filter?

How much tuples are necessary for operator to be useful?

Steps used to perform analysis:

Calculate COSFIRE operator at each location in the middle of each ground truth data point.

Visualize it and compare to the image itself.

Save resulting images to create a video

#COSFIRE #sparse portrait #robustness

sparse velocity (speed decomposition)

#sparse portrait #sparse decomposition #sparse velocity

Video c09

#sparse portrait #sensitivity analysis #lambda

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Video c01

#sparse portrait #sensitivity analysis #lambda

c15 prior normalization

#tracking #sparse portrait

c09 prior normalization

#tracking #sparse portrait

c01 prior normalization

#tracking #sparse portrait

Sparse portraits in different color spaces part 2.

#sparse portrait

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Sparse portraits in different color spaces part 1.

#sparse portrait

Difference between video decomposition if sharpening is used. This is video 1, frames 1,20,30,35.

#sparse decomposition #sharpening

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