Tag Archives: temporal
Moving Object Size Distortion in Temporal Slitscan Effects
Temporal slitscan processing effects can generate all kinds of visually interesting size distortions to objects moving in the movie file processed by the slitscan effect. This post will explore one example of this based on processing a 90 degree video pan with the Temporal Scan Tracker effect.
Temporal Image Processing of Underwater Video
Movies of fish swimming underwater typically work really well as source video for temporal image processing effects. In this post we’ll explore the use of the Temporal Difference Matte effect, and also discuss how to auto-correct the white balance of images or video taken underwater.
Working with Temporal Image Processing Effect Time Windows
A question came up recently on the Studio Artist User Forum about getting started using temporal image processing effects in Studio Artist 4. Temporal effects take multiple movie frames at different times as input and output a single effected output image. This post will help explain how to work with the temporal time window (the range of input frames used to build the effect) associated as an input to a temporal effect, and how by adjusting that time window you can change or fine tune the overall look of the effect.
Temporal Difference and Difference1 Processing
See the full gallery on Posterous Someone recently asked me some questions about the Temporal Difference1 effect, which is a relatively new temporal image processing effect in Studio Artist 4.03 that was added after the initial 4.0 release and is not documented in the User Guide pdf. This post will discuss the Temporal Difference1 effect, and contrast it to the much simpler original Temporal Difference effect.
Working with Temporal Effects and Static Camera View Source Movies
See the full gallery on Posterous Today’s post continues our discussion from yesterday, where we used a source movie taken with a non moving camera that contains objects (pedestrians) moving within the static view scene. Yesterday we worked with the Temporal Scan Tracker to build SlitScan effects. Today we will look at some other temporal image processing effects that work well with static camera view source movies.
Working with the SlitScan Direction in a Temporal Scan Tracker Effect
See the full gallery on Posterous Today’s post will discuss working with the SlitScan direction control in a Temporal Scan Tracker effect. All of Studio Artist’s temporal image processing effects work with loaded source movie files and process multiple input frames taken from different times in the movie to build time based image processing effects.
Incorporating Symmetry into a Temporal Difference Matte Video Effect
See the full gallery on Posterous Today’s post continues the discussion i started yesterday about a moving symmetry effect based on temporal processing of a dancers motion. Yesterday’s post detailed the specifics of how i built a simple MSG preset to create the symmetry effect. Today’s post will take a look at the rest of the processing used to create the overall effect. The 2 images above are frame captures from some processed video.
Temporal Difference Matte
Studio Artist 4 allows for some amazing effects that involve processing multiple video frames using the temporal image operation effects. You can smear time, generate slit scan effects, create panorama images, and much much more.
Time Axis Rotation
Time Axis Rotation (shown above) is a cool temporal image processing feature available in Studio Artist 4. The image shown above is a frame capture from a time axis rotation video, which was generated by processing a source video of some kung fu fighters in a gym throwing kicks at each other with a time axis rotation effect. In looking at the frame capture you can see that a pretty boring source video of people doing some movement has been transformed into some amazing abstract animation. You can think of this effect as a variation on slit scan video processing, which we’ve discussed for the last few posts. It also provides an interesting conceptual hurdle many people have trouble first ‘groking’, but here goes. You can think of a digital video as being a 3 dimensional object, where the horizontal and vertical spatial frame axis are 2 of the 3 dimensions, and the frames as stacked in order move through the 3rd dimensional ‘z’ axis. So a digital video file is like a rectangular box floating in space. What time axis rotation does is rotate the 3D box, so that what was a time axis is now one of the spatial axis in the box that represents the digital video file. Is your brain also starting to spin when you think about this?
Slit Scan Effects
I was recently checking out Studio Artist user John Neel’s photo blog and realized he was creating slit scan effects by hand in another unnamed photo program using multiple layers, which must be a tedious chore to say the least. Studio Artist 4 offers a variety of different fully automatic approaches to creating a wide variety of slit scan effects. After John realized this he got very excited to say the least. My example slit scan shown above was created in Studio Artist by automatically processing some video footage i shot in Southbank in Melbourne Australia. I used a Flip video camera to take a 360 degree pan while standing at a stationary point in Southbank. The slit scan effect converts the video pan into a static panorama image in this particular example.
