Pei, Soo-Chang Huang, Shih-Gu
Published in
Journal of the Optical Society of America. A, Optics, image science, and vision
The linear canonical transform (LCT) was extended to complex-valued parameters, called complex LCT, to describe the complex amplitude propagation through lossy or lossless optical systems. Bargmann transform is a special case of the complex LCT. In this paper, we normalize the Bargmann transform such that it can be bounded near infinity. We derive ...
Zhao, Yue Thu Hien, Khuat Thi Mizutani, Goro Rutt, Harvey N Amornwachirabodee, Kittima Okajima, Maiko Kaneko, Tatsuo
Published in
Journal of the Optical Society of America. A, Optics, image science, and vision
We have detected a second-order nonlinear optical response from aggregates of the ampholytic megamolecular polysaccharide sacran extracted from cyanobacterial biomaterials by using optical second-harmonic-generation (SHG) microscopy. The SHG images of sacran cotton-like lump, fibers, and cast films showed SHG intensity microspots of several tens of...
Ju, Jaeyong Kim, Daehun Ku, Bonhwa Han, David K Ko, Hanseok
Published in
Journal of the Optical Society of America. A, Optics, image science, and vision
This paper addresses the problem of multi-object tracking in complex scenes by a single, static, uncalibrated camera. Tracking-by-detection is a widely used approach for multi-object tracking. Challenges still remain in complex scenes, however, when this approach has to deal with occlusions, unreliable detections (e.g., inaccurate position/size, fa...
Woods, Matthew Katsaggelos, Aggelos
Published in
Journal of the Optical Society of America. A, Optics, image science, and vision
The image processing technique known as super-resolution (SR), which attempts to increase the effective pixel sampling density of a digital imager, has gained rapid popularity over the last decade. The majority of literature focuses on its ability to provide results that are visually pleasing to a human observer. In this paper, we instead examine t...
Wang, Kai Zhu, Jingping Liu, Hong Du, Bingzheng
Published in
Journal of the Optical Society of America. A, Optics, image science, and vision
An expression of the degree of polarization (DOP) based on the geometrical optics polarimetric bidirectional reflectance distribution function model is presented. In this expression, the DOP is related to the surface roughness and decreases at different reflection angles because diffuse reflection is taken into consideration. A shadowing/masking fu...
Garner, Timothy J Lakhtakia, Akhlesh Breakall, James K Bohren, Craig F
Published in
Journal of the Optical Society of America. A, Optics, image science, and vision
Scattering by a uniformly translating sphere of a pulse that modulates the amplitude of a linearly polarized plane wave was formulated using the frame-hopping method involving a laboratory inertial reference frame and the sphere's comoving inertial reference frame. The incident signal was defined in the laboratory frame and transformed to the comov...
Macfaden, A J Wilkinson, T D
Published in
Journal of the Optical Society of America. A, Optics, image science, and vision
Arbitrary two-dimensional complex modulation of an optical field is a powerful tool for coherent optical systems. No single spatial light modulator (SLM) offers true arbitrary complex modulation, but they can be combined in order to achieve this. In this work, two sides of a twisted nematic (TN) liquid crystal SLM are used sequentially to implement...
Baek, Ye Seul Kwak, Youngshin Park, Seung-Ok
Published in
Journal of the Optical Society of America. A, Optics, image science, and vision
Display brightness data were collected under a wide range of surround conditions. A 24 in. (60.96 cm) LCD display was used to generate color stimuli, and a 107 in. (271.78 cm) two-dimensional illuminator was used to generate various surround conditions. The brightness values of the display under 89 monitor-surround-luminance combinations were colle...
Sandoval, Christopher Kim, Arnold D
Published in
Journal of the Optical Society of America. A, Optics, image science, and vision
We introduce a new model for multiple scattering of polarized light by statistically isotropic and mirror-symmetric particles, which we call the generalized Kubelka-Munk (gKM) approximation. It is obtained through a linear transformation of the system of equations resulting from applying the double spherical harmonics approximation of order one to ...
Huchzermeyer, Cord Kremers, Jan
Published in
Journal of the Optical Society of America. A, Optics, image science, and vision
We evaluated a technique for measuring temporal contrast sensitivities to sine-wave modulation driven by S-cones and rods in the perifovea using triple silent substitution. Isolating stimuli for S-cones and rods were created using an eight-channel, four-primary LED stimulator that has been validated before. Sensitivities were measured at 10 differe...
