| 摘要 |
<p>PURPOSE: To make motion detection highly precise by varying a threshold value for deciding whether or not motion is detected by varying and setting a motion detection coefficient, and performing switching for deciding whether in-field interpolation is performed according to the result of a motion detecting means. CONSTITUTION: The motion detecting means 28 is supplied with an image signal and a vertical edge detecting means 30 detects a vertical edge. At this time, a detection coefficient setting means 33 and a filter 37 cut a horizontal component and a detection coefficient setting means 38 varies and sets the motion detection coefficient so that motion detection sensitivity becomes small. Signals are supplied from means 33 and 38, horizontal isolation point removing means 34 removes horizontal isolation points, and the means 33 and 38 increase or decrease the motion detection precision according to whether or not there is motion. A motion detection signal is sent from a switching part 41 to a vertical isolation point removing means 42, which removes vertical isolation points; and an interpolation area expanding means expands an interpolation area, and a smoothing means 44 performs a smoothing process and supplies the result to a field interpolating means 29.</p> |
