Imagery segmentation¶

Description¶

<put algorithm description here>

Parameters¶

Grid [raster]

<put parameter description here>

Method [selection]

<put parameter description here>

Options:

• 0 — [0] Standard
• 1 — [1] Hilditch’s Algorithm
• 2 — [2] Channel Skeleton

Default: 0

Initialisation [selection]

<put parameter description here>

Options:

• 0 — [0] Less than
• 1 — [1] Greater than

Default: 0

Threshold (Init.) [number]

<put parameter description here>

Default: 0.0

Convergence [number]

<put parameter description here>

Default: 3.0

Outputs¶

Skeleton [raster]

<put output description here>

Skeleton [vector]

<put output description here>

Console usage¶

processing.runalg('saga:gridskeletonization', input, method, init_method, init_threshold, convergence, result, vector)

See also¶

Description¶

<put algorithm description here>

Parameters¶

Features [multipleinput: rasters]

<put parameter description here>

Bandwidth (Cells) [number]

<put parameter description here>

Default: 2

Type of Surface [selection]

<put parameter description here>

Options:

• 0 — [0] smoothed surface
• 1 — [1] variance (a)
• 2 — [2] variance (b)

Default: 0

Extraction of... [selection]

<put parameter description here>

Options:

• 0 — [0] minima
• 1 — [1] maxima
• 2 — [2] minima and maxima

Default: 0

Feature Aggregation [selection]

<put parameter description here>

Options:

• 0 — [0] additive
• 1 — [1] multiplicative

Default: 0

Normalized [boolean]

<put parameter description here>

Default: True

Outputs¶

Surface [raster]

<put output description here>

Seeds Grid [raster]

<put output description here>

Seeds [vector]

<put output description here>

Console usage¶

processing.runalg('saga:seedgeneration', grids, factor, type_surface, type_seeds, type_merge, normalize, surface, seeds_grid, seeds)

See also¶

Description¶

<put algorithm description here>

Parameters¶

Seeds [raster]

<put parameter description here>

Features [multipleinput: rasters]

<put parameter description here>

Method [selection]

<put parameter description here>

Options:

• 0 — [0] feature space and position
• 1 — [1] feature space

Default: 0

Neighbourhood [selection]

<put parameter description here>

Options:

• 0 — [0] 4 (von Neumann)
• 1 — [1] 8 (Moore)

Default: 0

Variance in Feature Space [number]

<put parameter description here>

Default: 1.0

Variance in Position Space [number]

<put parameter description here>

Default: 1.0

Threshold - Similarity [number]

<put parameter description here>

Default: 0.0

Refresh [boolean]

<put parameter description here>

Default: True

Leaf Size (for Speed Optimisation) [number]

<put parameter description here>

Default: 256

Outputs¶

Segments [raster]

<put output description here>

Similarity [raster]

<put output description here>

Seeds [table]

<put output description here>

Console usage¶

processing.runalg('saga:simpleregiongrowing', seeds, features, method, neighbour, sig_1, sig_2, threshold, refresh, leafsize, segments, similarity, table)

See also¶

Description¶

<put algorithm description here>

Parameters¶

Grid [raster]

<put parameter description here>

Output [selection]

<put parameter description here>

Options:

• 0 — [0] Seed Value
• 1 — [1] Segment ID

Default: 0

Method [selection]

<put parameter description here>

Options:

• 0 — [0] Minima
• 1 — [1] Maxima

Default: 0

Join Segments based on Threshold Value [selection]

<put parameter description here>

Options:

• 0 — [0] do not join
• 1 — [1] seed to saddle difference
• 2 — [2] seeds difference

Default: 0

Threshold [number]

<put parameter description here>

Default: 0

Allow Edge Pixels to be Seeds [boolean]

<put parameter description here>

Default: True

Borders [boolean]

<put parameter description here>

Default: True

Outputs¶

Segments [raster]

<put output description here>

Seed Points [vector]

<put output description here>

Borders [raster]

<put output description here>

Console usage¶

processing.runalg('saga:watershedsegmentation', grid, output, down, join, threshold, edge, bborders, segments, seeds, borders)

See also¶