1. A device for determining objects in a color recording, comprising: an identifier which is implemented to identify connected regions whose size or shape corresponds to a predetermined condition from a plurality of connected regions corresponding to chromatin-comprising objects and existing in a binary image derived from the color recording based on a ratio of green components with respect to blue components in the color recording, based on a shape or a size of the connected regions; a feature extractor for extracting a feature set for each of the identified connected regions from the color recording; a classifier for classifying the identified connected regions into at least two disjunct groups based on the extracted feature sets for the identified connected regions; and wherein the objects to be determined are plasmodia and the color recording is a visual field of at least a part of a thick blood film.