Pinhole Images

Creating Pinhole Cameras and Images with Limited Resources

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...

Projected Pinhole Diffraction

Impacts of Pinhole Images on Image Quality and Interpretation of Pediatric Tc-DMSA Renal Scintigraphy

Received 3/30/2009; revised 4/13/2009; accepted 4/21/2009. For correspondence and reprints contact: Chi-Yun Chen, M.D., Department of Nuclear Medicine, Antai Tian-Sheng Memorial Hospital. 210 Section 1, ChungCheng Road, Tungkang, Pingtung 92842, Taiwan. Tel: (886)8-8329966 ext. 1631, Fax: (886)8-8329977, E-mail: [email protected] Objective: The purpose of this study was to compare the image...

Visual Simulation of Retinal Images with Various Designs of Pinhole Contact Lenses

Presbyopia, which manifests from loss of accommodative function of the crystalline lens, is a ubiquitous visual disability of the aging eye. The demand for clear, comfortable near vision is increasing with the widespread use of devices such as mobile phones, tablets and computers. It was recently reported that presbyopia is related to difficulties with activities of daily living and resulting s...