Accidental Pinhole and Pinspeck Cameras

Creating Pinhole Cameras and Images with Limited Resources

A mathematical and algorithmic study of the Lambertian SFS problem for orthographic and pinhole cameras

This report proposes a mathematical and algorithmic study of the Lambertian SFS problem for orthographic and pinhole cameras. Our approach is based upon the notion of viscosity solutions of Hamilton-Jacobi equations. This approach provides a mathematical framework in which we can prove the well-posedness of the problem (proof of the existence of a solution and characterization of all solutions)...

Pinhole Mask Sensor a Pinhole Mask Sensor

Figure 1 shows an example of a light field camera with a pinhole mask in front of the sensor. If we look at the sensor in 1D and assume an total x-resolution of 900 pixels and a Θ resolution of 9, the local x resolution is 100. The disadvantages are therefore a loss in resolution and a loss of light, as most of the light gets blocked by the mask. Therefore, while this model is very clean on a t...

Design and Analysis of a Wetting Lens for the Pinhole Cameras of a Two Phase Flow System

The present work reports the fabrication process of micro lens for pinhole cameras using COMSOL Multiphysics®, by satisfying the wetting properties. Wetting means change of contact angle between the liquid and solid surface area. The wetting properties are clearly understood in terms of forces. The two immiscible fluids like conducting fluid and insulating fluid were taken for the formation of ...

Revealing the scene outside the picture

We identify and study two types of “accidental” images that can be formed in scenes. The first is an accidental pinhole camera image. The second class of accidental images are “inverse” pinhole camera images, formed by subtracting an image with a small occluder present from a reference image without the occluder. Both types of accidental cameras happen in a variety of different situations. For ...