This paper discusses the investigation and modeling of human perception of pictorial visual information during landscape interpretation of space and air earth's surface remote images. The conception of iconic sign (element of perceptive clusterization) is taken as a principle. The perception process is modeled from semiotical approach. The division of information into syntactic, semantic, and pragmatic aspects is assumed as a basis. Image syntax (construction) is determined according to spatial distribution of image brightness. Image could be described by formal language, consisting of image structural element's alphabet (such as unreduced element, grain, contour, region), range alphabet, which characterizes some hierarchical ranges of structural element's relations and a number of substitution rules. Such image representation describes its syntax in terms of hierarchical typical fragments of image, takes into consideration image construction and relation's structure, corresponding to human perception. Different types of semantics are discussed. The limiters of algorithmic, heuristic, and creative types are considered.
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