19 Reflectance - Based Shape Recovery
نویسندگان
چکیده
19.
منابع مشابه
Reflectance and Shape Estimation with a Light Field Camera under Natural Illumination
Reflectance and shape are two important components in visually perceiving the real world. Inferring the reflectance and shape of an object through cameras is a fundamental research topic in the field of computer vision. While three-dimensional shape recovery is pervasive with varieties of approaches and practical applications, reflectance recovery has only emerged recently. Reflectance recovery...
متن کاملSemester Task Duration
There are many techniques available to approach reflectance-based shape recovery in appropriate fields of application [4]. For instance, three-source photometric stereo method may be used for generating height maps of a human face, a human hand, etc. As an example, the following figures show three input images generated by using Lambertian reflectance maps (Figure 1). Figure 2 shows the shape r...
متن کاملOn Shape and Material Recovery from Motion
We present a framework for the joint recovery of the shape and reflectance of an object with dichromatic BRDF, using motion cues. We show that four (small or differential) motions of the object, or three motions of the camera, suffice to yield a linear system that decouples shape and BRDF. The theoretical benefit is that precise limits on shape and reflectance recovery using motion cues may be ...
متن کاملShape and Reflectance Recovery using Multiple Images with Known Illumination Conditions
We develop a variational method to recover both the shape and the reflectance of a scene surface(s) using multiple images, assuming that illumination conditions are fixed and known in advance. Scene and image formation are modeled with known information about cameras and illuminants, and scene recovery is achieved by minimizing a global cost functional with respect to both shape and reflectance...
متن کاملImage-Based Acquisition of Shape and Spatially Varying Reflectance
The shape and reflectance of complex objects, for use in computer graphics applications, cannot always be acquired using specialized equipment due to cost or pratical considerations. We want to provide an easy and cost-effective way for the approximate recovery of both shape and spatially-varying reflectance of objects using commodity hardware. In this paper, we present an image-based technique...
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تاریخ انتشار 2004