Deinterlacing-an overview De Haan, G.; Bellers, E.B.
Proceedings of the IEEE,
09/1998, Volume:
86, Issue:
9
Journal Article
Peer reviewed
The question "to interlace or not to interlace" divides the television and the personal computer communities. A proper answer requires a common understanding of what is possible nowadays in ...deinterlacing video signals. This paper outlines the most relevant proposals, ranging front simple linear methods to advanced motion-compensated algorithms, and provides a relative performance comparison for 12 of these methods. Next to objective performance indicators, screen photographs have been used to illustrate typical artifacts of individual deinterlacers. The overview provides no final answer in the interlace debate, as such requires unavailable capabilities in balancing technical and nontechnical issues.
We explored the impact of gamma settings on visual experiences in diverse TV configurations, revealing user acceptability influenced by backlight brightness and color gamut. The findings challenge ...the traditional fixed gamma value, suggesting a need for tailored adjustments to align with diverse viewer preferences in different TV setups.
A fast mode decision algorithm for an H.264 encoder is proposed which reduces computation by using a statistical dependency of macroblock rate-distortion (RD) costs. The algorithm skips the motion ...estimation and/or intra prediction mode decision with an adaptive threshold. The simulation results show that the proposed algorithm achieves an almost 2X speedup with negligible degradation in coding efficiency.
At the time of introduction of the television, the video format was optimized given both economical and technological constraints. The resulting video format is not necessarily optimal for the ...current display technology. Moreover, current consumer-level priced and state-of-the-art scan-rate converters enable a spatio-temporal decoupling of the received video and the displayed video. This paper presents the results of a subjective assessment indicating the preferred CRT-display format.
The first paper by Khan et al. presents a subsampling-based image compressor for capsule endoscopic system which is aimed at reducing the chip area and power consumption, while maintaining an ...acceptable video quality. When real-time and power consumption are both key issues, as in wearable or mobile battery-powered systems, an effective implementation solution is represented by the realization of a system-on-chip (SoC) using submicron CMOS technology. Not only the computation core but also the on-chip communication infrastructure and the main memory hierarchy has to be optimized, since in video systems complexity and power consumption are often dominated by data storage, transfer rate, the relevant memory size, and access frequency. ...the guest editors hope that the selected papers will provide the readers with interesting samples of present research on algorithms and architectures for real-time image and video enhancement in a broad range of applications.
A system for automatic 2D/3D display mode selection is presented. Most 3D displays require special glasses to create an illusion of observing a 3D scene. The proposed system is using a camera to ...automatically detect if there are users in front of the display wearing the special 3D viewing glasses. An efficient algorithm is described to detect faces wearing the glasses in the camera images. Based on the detection, the display automatically switches between the 2D and 3D viewing modes.
This paper evaluates a case study where a previously reported texture-adaptive skin detection algorithm is applied for TV image enhancement. A color-only skin detector of an existing high-end TV chip ...is extended with a texture feature, enabling exclusion of skin-colored textured areas. We report the performance in terms of detection result, and in terms of image quality in a cascade of three image enhancement functions. In terms of detection score, at 80% true positive rate, the false positive rate of the texture-adaptive skin detector is 29% lower than that of the color-only skin detector, forming a clear improvement. With respect to its application in enhancement, we assess the enhancement quality by measuring the RMS error of the enhancement output compared to an optimally enhanced image based on ground-truth skin areas. When using the texture-adaptive skin detector, the enhancement RMS error is 44% lower than the RMS error when using the color-only skin detector, thereby confirming the applicability of the proposal. Subjective evaluation indicates that the proposed algorithm is better suitable for mid/high-frequency boosting applications like sharpness enhancement, and less suitable for enhancements that operate on low frequencies like color correction functions 1 .
Motion blur is one of the major concerns of today's LCD panels. Driving LCD panels at higher frame rates provides a means to reduce the motion blur, but to be successful also the video stream needs ...to be converted accordingly. This paper shows a means to reduce the motion blur by applying high frame‐rate motion‐compensated temporal interpolation, and illustrates the architecture that enables implementation at a consumer price level.
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