显示模式#

Using this pop-over, you can choose between displaying the preview image or a scope that visualizes its color distribution.

图像预览#

Previews what the final video will look like, and lets you change the image layout using various tools.

亮度波形#

This scope visualizes the luminosity (brightness) distribution of the image, letting you see at a glance if there's enough contrast and if any areas are under- or overexposed.

The scope works by plotting a curve for each scanline in the current video frame. Another way of saying this is that each pixel column in the luma waveform is a brightness histogram of the corresponding pixel column in the frame. Specifically:

  • The horizontal position of a pixel in the waveform refers to a pixel column in the frame.

  • The vertical position of a pixel in the waveform refers to a brightness value, going from 0 at the bottom to 1 at the top.

  • The brightness of a pixel in the waveform indicates how many pixels in the above frame column have the above brightness. If no pixels in the frame column have this brightness, the waveform pixel is black. If at least three pixels in the frame column have this brightness, the waveform pixel is white.

When this scope is selected, you have the following option in Sidebar ‣ View ‣ View Settings:

分离色彩

Show three waveforms -- for the red, green, and blue color channels -- instead of just one for the overall image brightness.

The examples below show two images and their corresponding luma waveforms.

../../../../_images/video-editing_preview_display-mode_luma-waveform-example-1.png

The various horizontal lines in the luma waveform match the uniform-colored lines of the picture. Note that the 'gray 20%' one-pixel width line (inside the yellow strip) is represented in the Luma waveform by a gray line. The two lines drawing an "X" are from the two monochrome gradients. Finally, the broken line matches the colored gradient at the bottom.#

../../../../_images/video-editing_preview_display-mode_luma-waveform-example-2.png

曲线是相当明显的。我们发现天空亮度为80-100%,海洋亮度约为40%,山区亮度为10-20%,阳光部分的亮度约为40%。#

色度矢量示波图#

This scope visualizes the color distribution of the image. Each point has:

  • An angle indicating its hue.

  • A distance-from-center indicating its saturation.

  • A brightness indicating how many pixels in the video frame have the above hue and saturation.

../../../../_images/video-editing_preview_display-mode_example.jpg

示例图像。#

../../../../_images/video-editing_preview_display-mode_vectorscope.png

对应的色度矢量示波图.#

直方图#

Shows three overlapping graphs, one for each color channel. Within each graph:

  • The X axis corresponds to color intensity, going from 0 on the left (black) to 1 on the right (fully red/green/blue).

  • The Y axis corresponds to number of pixels.

使用此模式可平衡图像中的色调范围。均衡良好的图像应具有良好而平滑的颜色值分布。

../../../../_images/video-editing_preview_display-mode_example.jpg

示例图像。#

../../../../_images/video-editing_preview_display-mode_histogram.png

对应的直方图。#