Sharp VN-EZ1U VNEZ1U Operation Manual - Page 41

IMAGE ADJUSTMENT SETTINGS If you are using the VR-PK100 Image adjustment is a function for use with images loaded using the PixLab TWAIN(YUV) included with the VR-PK100. It has no effect on images taken on the VN-EZ1. Why Image adjustment is Necessary The following types of still images actually consist of movie data and not still images data like that of a still digital camera: q Images loaded from a viewcam using the PixLab TWAIN Viewcams use a data recording method suited for movies. In concrete terms, they record odd scan lines approximately every 1/60 seconds then the following even scan lines approximately 1/60 seconds later to achieve one still image about every 1/30 seconds.(Refer to the diagram below) The data recorded in units of approximately 1/60 seconds is called a "field", and the synthesized data for two fields (1/30 seconds) is called a "frame". PixLab synthesizes fields to convert them into frames, thereby achieving a still image. Image data recorded on a viewcam (field data) 1/60 sec. 1/60 sec. 1/60sec. 1/60 sec. ..... ..... Synthesis ..... Adjustment Adjustment .... Synthesized image (frame data) If the subject is moving, however, the data for the two fields is slightly different, and it is not possible to achieve a clear still image simply by synthesizing the fields. "Image adjustment" refers to digital processing of the data to achieve a clear still image. PixLab offers a choice of two types of Image adjustment. q Edge Smoothing Two adjacent fields of even and odd are compared, movement is detected and the optimum adjustment is performed. This is about the same processing as the "high quality frame still technology" used in viewcams, and in most cases choosing this mode results in a high quality still image. For normal purposes we recommend setting this mode. q Without adjustment (still Image/adjust later) Frames are generated simply by putting one field on top of the adjacent field. Use this mode when loading pictures of still subjects taken with the viewcam installed on a tripod or when adjustment will be performed later with the PixLab Viewer. Adjusting Images using the PixLab Viewer To adjustment images loaded with the PixLab TWAIN set to "No adjustment", select either "Edge Smoothing" or "Field Adjustment" in the PixLab Viewer. q Field Adjustment When only one part of the image is moving, the movement is small and there is a thin grid pattern over a wide area of the image, selecting "Field Adjustment" can sometimes result in a good quality image. 41