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.
De-interlacing of video data de Haan, G.; Bellers, E.B.
IEEE transactions on consumer electronics,
08/1997, Volume:
43, Issue:
3
Journal Article
Peer reviewed
A new de-interlacing algorithm is proposed, suitable for high-quality flicker-free display of television images, for matrix type of displays, and as a basis for scan-rate conversions. The algorithm ...applies motion estimation and compensation techniques to achieve a high performance for moving and stationary image parts. This paper provides details of the new algorithm and an evaluation showing the relative performance of the proposal and a set of newly proposed and/or commercially available methods.
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 .
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.
On video formats and coding efficiency Beilers, E.B.; de Haan, G.
IEEE transactions on consumer electronics,
02/2001, Volume:
47, Issue:
1
Journal Article
Peer reviewed
This paper examines the efficiency of MPEG-2 coding for interlaced and progressive video, and compares de-interlacing and picture rate up-conversion before and after coding. We found receiver side ...de-interlacing and picture rate up-conversion (i.e. after coding) to give better image quality at a given data rate. In contrast with some other publications, we found interlaced video coding to be better than progressive video coding for many relevant sequences, even when comparing the results on a progressive display.
Video format conversion is required if the received video format mismatches the display format (spatially and/or temporally). In addition, temporal format conversion can successfully be used to ...eliminate movie judder (2:2 and 3:2 pull down) and generate a smooth motion portrayal. In This work, we present a novel architecture and the associated algorithms which provide high-quality video format conversion. The architecture and its representative algorithms are to a large extent based on a software approach.
Solving occlusion in Frame-Rate up-Conversion Bellers, E.B.; van Gurp, J.W.; Janssen, J.G.W.M. ...
2007 Digest of Technical Papers International Conference on Consumer Electronics,
2007-Jan.
Conference Proceeding
Peer reviewed
Tracking motion of moving objects in a video scene by the human eye results in a stationary picture on the retina. However, if the motion is irregular, tracking can be difficult, resulting in the ...perception of motion blur or motion judder. This is a typical result due to the broadcast of film material. Film is captured at 24 Hz, and by picture repetition displayed at either 50 or 60 Hz. Motion judder can be eliminated at the receiver end by temporally correcting for the motion. Although this significantly improves the viewing experience, it can cause picture degradation at the boundaries of moving objects due to improper interpolation in and around occlusion areas. In this paper, we present a solution to the occlusion problem.
The addition of a segmented backlight enables a significant contrast improvement and power savings for LCD panels. Determining the proper backlight drive values and adapting the video accordingly is ...far from trivial. This paper will focus on an efficient algorithm and architecture enabling the high dynamic range experience.
This paper describes a new high quality de-interlacing algorithm applying motion estimation and compensation techniques. First, a comparison between two recently introduced de-interlacing concepts ...will be presented. One method is based on a generalized sampling theorem and the other uses time-recursion. The new algorithm aims at combining the benefits of both.
Motion blur is one of the remaining concerns for LCD-TVs. A solution is provided by reducing the sample-and-hold time by driving the LCD-panel at a higher temporal frequency (120 Hz), and ...additionally properly converting the video signal into a 120 Hz video stream. Applying motion-compensated frame-rate conversion (MC- FRC) technology not only requires sophisticated algorithms but an underlaying video architecture as well which can sustain the high throughput rates, particularly for full HD at 120 Hz. In this paper, we present the algorithm and video architecture which enables the conversion of 120 Hz occlusion-free MC-FRC for up to full HD sources.
