Facial landmarks are features describing shape, color, or texture of face images. Landmark detection is essential for... Read more.
Intensity patterns, which encode multiple phase functions, increases the efficiency of phase-shiting by reducing the number of... Read more.
Matched filters require explicit knowledge of the target. This limits the usefulness when targets are unspecified or dynamically changing... Read more.
Advanced fringe projection systems with cameras and projectors arranged arbitrarily are modeled using four key concepts. Read more.
Calibration of structured-light systems for 3D imaging is difficult because the camera and projector must be calibrated together... Read more.
Homographies are crucial for camera calibration and other applications. We show that homographies can be obtained using only three... Read more.
Visibility restoration is challenging when only monocular images are available, and a real-time image processing is required... Read more.
Homogeneous coordinates are essential for vision-based applications. This paper presents an intuitive approach from the computer vision... Read more.
Estimation of sinusoids with unknown phase is biased because of noise. We present an unbiased estimation method for unknown... Read more.
Optical applications, robot vision, and augmented reality guiding require the position of cameras to a reference plane in real-time... Read more.
Usually, ronchigrams are generated by the direct ray-tracing method. However, irregularly sampled images (scattered pixels) are produced... Read more.
Fringe-patterns encode only one phase distribution. When more than one phase distribution are encoded, the result is an intensity pattern. Read more.
A camera calibration method by phase encoding and coordinate transformation is proposed. We use a crossed grating on the reference... Read more.
Phase demodulation is a staple requirement for applications in physics, engineering, medicine, biometry, and many others... Read more.
Usually, phase-shifting algorithms assume linear shifts of time and space. However, this requirement is not always satisfied in practice. Read more.
A noniterative phase-unwrapping algorithm, which operates over the gradient of the phase jumps, is proposed. Read more.
Lateral displacements of the light source in the Twyman-Green Interferometer induce phase shifts. No expensive or cumbersome devices... Read more.
The degradation by the zero-order spectrum in the Fourier fringe analysis is analyzed. The improvement using fringe pattern normalization is... Read more.
Phase-shifting for two or more frames with arbitrary and unknown phase shifts is possible. A new method applying fringe pattern normalization... Read more.