摘要:
An input digital video signal is converted to an output digital video signal having a different frame rate and a different number of pixel lines per frame. A first series of progressive scan format frames is formed from the input signal. Then a second series of frames is formed from the first series of frames using motion compensated temporal interpolation between successive frames of the first series in producing at least some of the frames of the second series so as to provide the difference in frame rate. Before or after the second series of frames is formed, vertical spatial interpolation is performed so as to provide the difference in the number of pixel lines per frame.
摘要:
A system for integrating film material with a digital video signal employs a film scanner to produce a digital video signal from the source film, and a post production system for combining with that signal the input digital video signal. Motion interpolated temporal compensation is employed at stages of frame rate conversion.
摘要:
In, for example, a motion compensated video standards converter wherein blocks in a first field or frame of a video signal are each compared with a plurality of blocks in the following field or frame of the video signal for deriving motion vectors representing the motion of the content of respective blocks between the first field or frame and the following field or frame, further motion vectors are selected for assignment to those of the blocks for which less than a predetermined plurality of good motion vectors are derived as a result of the comparison, by ranking all the good, non-stationary motion vectors derived for the field or frame in order of frequency of occurrence, and selecting those motion vectors which occur most frequently, unless they fall within a predetermined window of pixel motion of a motion vector already selected.
摘要:
A system for integrating film material with a digital video signal employs a film scanner to produce a digital video signal from the source film, and a post production system for combining with that signal the input digital video signal. Motion interpolated temporal compensation is employed at stages of frame rate conversion.
摘要:
Apparatus for converting a video signal to a photographic film image comprises a television standards converter for deriving from an input video signal, which may be a high definition video signal, a motion compensated digital video signal corresponding to 24 progressive scan frames per second, a video signal recorder for recording the digital video signal, a digital-to-analog converter for converting the digital video signal after reproduction to an analog video signal corresponding to 24 progressive scan frames per second, and an electron beam recorder to which the analog video signal is applied to record the content of the analog video signal on photographic film.
摘要:
A television standards converter comprises a motion analyzer for analyzing the motion between consecutive fields of an input television signal of one television standard and for deriving motion vectors in dependence on the motion, a filter for recursively filtering the motion vectors, and an interpolator for aligning the fields in dependence on the filtered motion vectors so as effectively to represent static pictures, and means to effect conversion using the static pictures to derive the required output television signal of a different television standard.
摘要:
Method of integrating 30 or 60 frame/s format material and 60 field/s 2:1 interlace scan format digital video signal to produce a 60 field/s 2:1 interlace scan format digital video signal by producing a progressive scan format digital video signal from the format material, converting the progressive scan format digital video signal to a 60 field/s 2:1 interlace scan format digital video signal and combining the converted signal with the 60 field/s interlace scan format digital video signal.
摘要:
Apparatus for processing motion vectors associated with a digital television image, comprises a vector filter and a vector calculator for deriving a plurality of motion vectors respectively representing the motion of pixels in a corresponding plurality of blocks of pixels in the image, a processor for distributing the plurality of motion vectors into groups, each group comprising motion vectors lying within a respective different predetermined range of magnitudes and directions, and a processor for substituting for the motion vectors in each of a plurality of the groups into which the largest number of the motion vectors fall, a single motion vector representing the motion vectors in the respective group.
摘要:
An input digital video signal representing a series of input frames with at least some of the input frames each having a first picture portion having a first acquisition characteristic (such as 60 Hz, 2:1) and a second picture portion having a second acquisition characteristic (such as 30 Hz, 1:1) is processed to produce an output video signal representing a series of output frames having generally the same acquisition characteristic (such as 24 Hz, 1:1). The method comprises the steps of distinguishing between the first and second picture portions in the input frames (for example by determining the difference between input fields (a.sub.1, a.sub.2 ; a.sub.3, a.sub.4 ; . . . ) of a pair, or by detecting a key signal accompanying the input video signal) and processing the first and second picture portions differently to produce the output frames.
摘要:
Image processing apparatus is described in which a source stream of data captured by a particular source is passed through a data splitter where it is split using one splitting technique into a plurality of split streams of data. These split streams of data each contain only part of the information within the source stream of data. The split streams of data are separately manipulated by a post production unit prior to being passed through a data combiner where they are recombined to form an output stream of data. The source stream of data and the output stream of data are of a higher resolution than the individual split streams of data. The post production unit includes at least one reformatter for reformatting the data stream to use a different splitting technique matched to the manipulation being performed in the post production unit.