Three-dimensional image processing apparatus, three-dimensional image-pickup apparatus, three-dimensional image-pickup method, and program

摘要

A sense of three-dimensionality and thickness is restored to a subject and a high-quality three-dimensional image with a low sense of a cardboard cutout effect is obtained, regardless of the cause of the cardboard cutout effect. In a three-dimensional image capturing apparatus (three-dimensional image processing apparatus) (1000), a depth generation unit (103) obtains L depth information and R depth information from a three-dimensional image, and an image correction unit (104) executes a shadow enhancement process that is stronger on the inside of an object than on the outside of the object, based on the L depth information and the R depth information. Through this, the occurrence of the cardboard cutout effect can be suppressed, and a high-quality three-dimensional image with a reduced cardboard cutout effect can be obtained.

主权项

1. A three-dimensional image processing apparatus that performs an image correction process on a left eye image and a right eye image contained in a three-dimensional image obtained through a dual-lens technique or a multiple-viewpoint technique, the apparatus comprising:
an image corrector configured to:
obtain a subject object from the left eye image and right eye image;perform an enhancement process configured to emphasize a shadow or shade produced by protrusions and recesses in a surface of the subject object using a first strength on an inward region of the obtained subject object; andperform an enhancement process configured to emphasize a shadow or shade produced by the protrusions and recesses in the surface of the subject object using a second strength that is weaker than the first strength on an outward region of the obtained subject object; whereinthe image corrector includes an R image corrector and an L image corrector, and the R image corrector includes:
an R image local tone converter configured to perform the enhancement process on a right eye image signal IS_R and output the right eye image signal on which the enhancement process has been performed as a corrected right eye image signal OS_R;an R image strength generator configured to determine a strength of an image correction process based on the right eye image distance image; andan R image synthesizer configured to synthesize the right eye image signal IS_R and the corrected right eye image signal OS_R based on the strength determined by the R image strength generator; and the L image corrector includes:
an L image local tone converter configured to perform the enhancement process on a left eye image signal IS_L and output the left eye image signal on which the enhancement process has been performed as a corrected left eye image signal OS_L;an L image strength generator configured to determine a strength of an image correction process based on the left eye image distance image; andan L image synthesizer configured to synthesize the left eye image signal IS_L and the corrected left eye image signal OS_L based on the strength determined by the L image strength generator.