MarchingSquaresVectorizer should generate expected geometry type when finding zero results.

Description

MarchingSquaresVectorizer usually produces a MultiPolygon when identifying geometries within a raster image.
However it returns a generic empty GeometryCollection when not finding anything.
Is should return an empty MultiPolygon instead to always return same data structure.

Environment

None

Status

Assignee

Daniele Romagnoli

Reporter

Daniele Romagnoli

Triage

None

Components

Fix versions

Priority

Medium
Configure