Various embodiments disclose a dimensioner apparatus including a projector configured to project structured light in a field of view of the dimensioner apparatus, a first image capturing device configured to capture a first structured light image of the field of view, and a processor configured to analyze the first structured light image to identify a hole region in the first structured light image. The hole region in the first structured light image indicates a presence of a structured light absorbing platform that absorbs the projected structured light. Further, the processor is configured to operate the dimensioner apparatus in a two-dimensional (2-D) mode based on the identification of the hole region. The dimensioner apparatus, in the 2-D mode, is configured to determine one or more dimensions of a 2-D object placed on the absorbing platform.