Image Based Lighting with Near Light Sources
نویسندگان
چکیده
Recent some researches on realistic computer graphics (CG) focus on synthesis of photographs and virtual objects. Image Based Lighting (IBL) is one of the techniques to generate naturally illuminated images by using photographs. This paper reports a new experiment to render virtual objects into real scenes with near light sources, which have not been considered in original IBL. Our experiment shows that we can generate more realistic images by faithfully constructing near light source environment.
منابع مشابه
survey effect of illuminance source on alertness in a laboratory design
Background and aims: Workplaces with poor lighting conditions often created occupational accidents or illness. This occurs because light cause visual and nonvisual effects on numerous physiological variables, such as the human sleep-wake cycle and cognitive performance. Indoor lighting conditions, as one aspect of the work environment, Influence on occupant’s mood, well-being, task performance ...
متن کاملEffects of Image Segmentation for Approximating Object Appearance Under Near Lighting
Shading analysis of an object under near lighting is not an easy task, because the direction and distance of the light source vary over the surface of the object. Observing a small area on the surface, however, techniques assuming far lighting are applicable, because variations of the direction and distance are small in the area. In this paper, we present two contributions to image segmentation...
متن کاملAn Adaptive Recovery Algorithm for Low Lighting Image
In this paper, an efficient and effective adaptive recovery algorithm is presented for low lighting image. Firstly, a multiple point light sources atmospheric scattering mode is proposed based on analyzing the form of light sources, the propagation process of light beam and the influence of multiple light sources. And then, a novel image prior bright channel prior, which is based on a kind of s...
متن کاملA New Image Based Ligthing Method: Practical Shadow-Based Light Reconstruction
In this paper we present a practical image based lighting method. Our method is based on a simple and easily constructible device: a square plate with a cylindrical stick. We have developed a user-guided system to approximately recover illumination information (i.e. orientations, colors, and intensities of light sources) from a photograph of this device. Our approach also helps to recover surfa...
متن کاملImage Based Shadowing in Real-Time Augmented Reality
This work presents an approach to render appropriate shadows with Image Based Lighting in Augmented Reality applications. To approximate the result of environment lighting and shadowing, the system uses a dome of shadow casting light sources. The color of each shadow is determined by the area of the environment behind the casting light source. As a result it is possible that changes in the ligh...
متن کامل