skimage 0.17.2

Attributes

Attributes

eps : float

Accuracy parameter. Increasing it, makes the classifier detect less false positives but at the same time the false negative score increases.

stages_number : Py_ssize_t

Amount of stages in a cascade. Each cascade consists of stumps i.e. trained features.

stumps_number : Py_ssize_t

The overall amount of stumps in all the stages of cascade.

features_number : Py_ssize_t

The overall amount of different features used by cascade. Two stumps can use the same features but has different trained values.

window_width : Py_ssize_t

The width of a detection window that is used. Objects smaller than this window can't be detected.

window_height : Py_ssize_t

The height of a detection window.

stages : Stage*

A link to the c array that stores stages information using Stage struct.

features : MBLBP*

Link to the c array that stores MBLBP features using MBLBP struct.

LUTs : cnp.uint32_t*

The ling to the array with look-up tables that are used by trained MBLBP features (MBLBPStumps) to evaluate a particular region.

The main idea behind cascade of classifiers is to create classifiers of medium accuracy and ensemble them into one strong classifier instead of just creating a strong one. The second advantage of cascade classifier is that easy examples can be classified only by evaluating some of the classifiers in the cascade, making the process much faster than the process of evaluating a one strong classifier.

Class for cascade of classifiers that is used for object detection.

Examples

See :

Local connectivity graph

Hover to see nodes names; edges to Self not shown, Caped at 50 nodes.

Using a canvas is more power efficient and can get hundred of nodes ; but does not allow hyperlinks; , arrows or text (beyond on hover)

SVG is more flexible but power hungry; and does not scale well to 50 + nodes.

All aboves nodes referred to, (or are referred from) current nodes; Edges from Self to other have been omitted (or all nodes would be connected to the central node "self" which is not useful). Nodes are colored by the library they belong to, and scaled with the number of references pointing them


File: /skimage/feature/_cascade.cpython-39-darwin.so#None
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