Depth maps created from blur information using images with focus at near and at far

Sukhee Cho; Wa James Tam; Filippo Speranza; Ron Renaud; Namho Hur; Soo In Lee

doi:10.1117/12.643008

30 January 2006 Depth maps created from blur information using images with focus at near and at far

Sukhee Cho, Wa James Tam, Filippo Speranza, Ron Renaud, Namho Hur, Soo In Lee

Proceedings Volume 6055, Stereoscopic Displays and Virtual Reality Systems XIII; 60551D (2006) https://doi.org/10.1117/12.643008
Event: Electronic Imaging 2006, 2006, San Jose, California, United States

Abstract

A method of producing depth maps for depth-image-based rendering (DIBR) of stereoscopic views is proposed and tested. The method is based on depth-from-defocus techniques, utilizing two original images, one with the camera focused at a near point and the other with it focused at a far point in the captured scene to produce depth maps from blur at edge locations. It is assumed that the level of blur at an edge reflects the distance it is from the focused distance. For each image, estimates of the level of blur edges at local regions are obtained by determining the optimal scale for edge detection based on a luminance gradient. An Edge-Depth map is then obtained by evaluating differences in blur for corresponding regions in the two images. This is followed by an additional process in which regions in the Edge-Depth map that have no depth values are filled to produce a Filled-Depth map. A group of viewers assessed the depth quality of a representative set of stereoscopic images that were produced by DIBR using the two types of depth maps. It was found that the stereoscopic images generated with the Filled-Depth and the Edge-Depth maps produced depth quality ratings that were higher than those produced by their monoscopic, two-dimensional counterparts. Images rendered using the Filled-Depth maps, but not the Edge-Depth maps, produced ratings of depth quality that were equal to those produced with factual, full depth maps. A hypothesis as to how the proposed method might be improved is discussed.

Citation Download Citation

Sukhee Cho, Wa James Tam, Filippo Speranza, Ron Renaud, Namho Hur, and Soo In Lee "Depth maps created from blur information using images with focus at near and at far", Proc. SPIE 6055, Stereoscopic Displays and Virtual Reality Systems XIII, 60551D (30 January 2006); https://doi.org/10.1117/12.643008

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available