Libras Movement

Donated on 8/16/2009

The data set contains 15 classes of 24 instances each. Each class references to a hand movement type in LIBRAS (Portuguese name 'LÍngua BRAsileira de Sinais', oficial brazilian signal language).

Dataset Characteristics

Multivariate, Sequential

Subject Area

Other

Associated Tasks

Classification, Clustering

Feature Type

Real

# Instances

360

# Features

-

Dataset Information

Additional Information

The dataset (movement_libras) contains 15 classes of 24 instances each, where each class references to a hand movement type in LIBRAS. In the video pre-processing, a time normalization is carried out selecting 45 frames from each video, in according to an uniform distribution. In each frame, the centroid pixels of the segmented objects (the hand) are found, which compose the discrete version of the curve F with 45 points. All curves are normalized in the unitary space. In order to prepare these movements to be analysed by algorithms, we have carried out a mapping operation, that is, each curve F is mapped in a representation with 90 features, with representing the coordinates of movement. Some sub-datasets are offered in order to support comparisons of results.

Has Missing Values?

No

Variables Table

Variable NameRoleTypeDemographicDescriptionUnitsMissing Values
no
no
no
no
no
no
no
no
no
no

0 to 10 of 91

Additional Variable Information

90 numeric (double) and 1 for the class (integer)

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Creators

Daniel Dias

Sarajane Peres

Helton Bscaro

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