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In this paper, we present a system including a novel component called programmable aperture and two associated post-processing algorithms for high-quality light field acquisition. The shape of the programmable aperture can be adjusted and used to capture light field at full sensor resolution through multiple exposures without any additional optics and(More)
—Loopy belief propagation (BP) is an effective solution for assigning labels to the nodes of a graphical model such as the Markov random field (MRF), but it requires high memory, bandwidth, and computational costs. Furthermore, the iterative, pixel-wise, and sequential operations of BP make it difficult to parallelize the computation. In this paper, we(More)
—We propose a content-aware stereoscopic image display adaptation method which simultaneously resizes a binocular image to the target resolution and adapts its depth to the comfort zone of the display while preserving the perceived shapes of prominent objects. This method does not require depth information or dense correspondences. Given the specification(More)
Due to the sequential-readout structure of complementary metal-oxide semiconductor image sensor array, each scanline of the acquired image is exposed at a different time, resulting in the so-called electronic rolling shutter that induces geometric image distortion when the object or the video camera moves during image capture. In this paper, we propose an(More)
This paper introduces 3D cinematography principles to the field of multimedia and illustrates their usage in stereoscopic media processing applications. These principles include (1) maintaining coordination among views, (2) having a continuous depth chart, (3) placing rest areas between strong 3D shots, (4) using a shallow depth of field for shots with(More)
— One common way to extend the battery life of a portable device is to reduce the LCD backlight intensity. In contrast to previous approaches that minimize the power consumption by adjusting the backlight intensity frame by frame to reach a specified image quality, the proposed method optimizes the image quality for a given backlight intensity. Image is(More)
—This paper presents three novel schemes for integrating digital stabilizer with video codec of a digital video camera, each designed for a different application scenario. Scheme 1 confines the global motion estimation (ME) to within a small background region determined by clustering the motion vectors (MVs) generated by the video encoder. Scheme 2 performs(More)
— Electronic image stabilizer and video codec are two important components of a digital video camera. Both require motion information of the captured image sequence to perform their respective tasks. Since motion estimation is a computationally intensive operation, we propose three schemes for integrating the electronic image stabilizer with the video(More)
Belief propagation (BP) is a popular global optimization technique in computer vision. However, it requires huge bandwidth and memory in hardware implementation because it iteratively processes messages between the neighboring nodes. In this paper, we propose an efficient message reduction algorithm that greatly reduces the bandwidth and memory consumption.(More)
Image formation is traditionally described by a number of individual models, one for each specific effect in the image formation process. However, it is difficult to aggregate the effects by concatenating such individual models. In this paper, we apply light transport analysis to derive a unified image formation model that represents the radiance along a(More)