What visual feature is emphasized in the "Ardabil Carpet" to achieve optical perspective?

The "Ardabil Carpet," a masterpiece of Persian carpet weaving, utilizes size variation of lamps to create a sense of depth and optical perspective. This technique plays an important role in guiding the viewer's eye throughout the design. The lamps, depicted in varying sizes, are arranged to suggest a spatial relationship, enhancing the illusion of three-dimensionality within the flat surface of the carpet. This method invites viewers to engage with the design in a way that conveys a dynamic interaction between the foreground and background.

While the central medallion, color contrast, and intricate border design contribute significantly to the overall aesthetic and decorative complexity of the carpet, it is the strategic manipulation of the scale of the lamps that primarily achieves this effect of optical perspective. The other features add to the richness of the carpet's visual language but do not specifically focus on creating that illusion of depth in the same way that the size variations do.