Pattern Creation
Test patterns with the Motion/Capture option are one of two types – frames, and sequences.
Frame based patterns
These are stored as individual frames, so that a picture captured with a digital camera, or an image generated in a graphics application could be used. Images can be in a variety of standard image formats, (jpg, jpeg, gif, yuv, yuv10, bmp, dpx and cineon).
How to import Frame patterns
Selecting Import Image brings up the file selector dialogue box. Simply navigate to find files in one of the acceptable formats, select it, and click open. The image is then imported into the display window, and a subsequent single click will transfer it to the output.
Sequences
These are sequences of frame patterns. These are intended to be a sequence of adjacent frames captured from a video source. Once a sequence has been loaded into OmniTek XR, it can be replayed forwards or backwards, in real time or faster or slower, in a loop, as well as stepping through the clip frame by frame. Depending on standard, it is possible to play up to around 40 seconds of standard definition video.
Please note that XR is a
Similarly the image resizing is done on a frame basis. Hence if the images in a sequence consist of field images, and the sequence is resized on loading, then result may not be exactly as anticipated.
How to import Sequences
XR can load two main sequence types. The main approach is to load a .avi file. Note that
.avi files can only be loaded if the relevant avi codec is installed into the Windows operating system. Codecs for common avi file formats are included in the standard Microsoft Windows installation.
It is also possible to load a sequence consisting of individual frames, as detailed below. There isn’t a separate menu selection for loading sequences, as importing a sequence of frames is fundamentally the same operation as importing a single frame. Use the Import Image menu to bring up the file selector box. Instead of selecting a single frame, select multiple frames (use of the shift key when selecting with the left mouse button, will help here). Select OK, and the sequence will now load into memory.
For the frames to be recognised as a sequence, the file naming must obey the following rules.
Each filename must contain a fixed length number, so ensure that the smaller numbers are padded to the same number of digits as the largest number. The number can be anywhere within the filename, as long as the position of the number within the file name does not change. The number must increment contiguously.
The frames used can be any image types that XR accepts for single frame images.
Example of incorrect filenames.
Test_7, Test_8, Test_9, Test_10, Test_11, Test_12 – The digits are not of fixed length. Test_7, 8 and 9 need to be renamed as Test_07, 08, 09 etc.
Fred_08, Fred_09, Fred_11, Fred_12 – the numbers do not increment contiguously – file Fred_10 is missing, so the sequence will not load.
Tmp_02, 03_Tmp, Tmp_04, Tmp_05 – the position of the digits varies.
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