Differential 3D shape retrieval

Improved differential 3D shape retrieval

“…Then we can capture images by the CCD camera. To have a better contrast, we make the background into black as the acquired image in paper [11], as shown in Fig. 6.…”

“…As shown in Martino et al's paper [11], captured by two cameras, the apparent image disparity D(x,y) gives information about the relative depth h(x,y), as shown in Fig. 1 relationship between them can be described as follows:…”

“…The effect is same to Eqs. (6)(7)(8)(9)(10)(11). Calculating partial derivatives in fringe domain is replaced with a simple procedure in Fourier spectrum space.…”

“…These methods need to manipulate various images, which do not meet the requirements of dynamic measurement. Martino et al [11] proposed a differential algorithm which does not require an unwrapping step.…”

“…Therefore the orthogonal fringes are less likely in the horizontal or vertical direction, but in a different direction. Thus, Martino et al's algorithm [11] is not suitable for this situation.…”