From the course: Digital Media Foundations
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Understanding waveforms
From the course: Digital Media Foundations
Understanding waveforms
- [Narrator] Waveform displays can show both the total composite color level in your media and the lumen levels, to explain how these work, I'm going to show you a waveform without the color displayed. Waveforms show all the pixels in the current frame, the horizontal axis is taken from the image, so the dots in this waveform that are say 100 pixels from the left are the pixels 100 points from the left in the image and so on. The vertical axis shows the level of luminance for each pixel, so dots that are higher up in this view may not be higher up in the image. There is no direct relationship between the vertical axis of a waveform and the vertical axis of the image. And just to spell this out, if you had a dark pixel at the top of the image, it would appear at the bottom of the waveform. Waveforms will display using different scales, but the principle is always the same. Pixels higher up on the graph are brighter than the pixels lower down, in this example, the left edge is showing…
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