![]() The contrast level of the image directly depends on the composite curve inclination angle. Reducing the output value of this point led to the darkening of the bright areas of the image. In the example below, a point of the light-colored area with the coordinates of the maximum value (255 255) was taken as a guide. By shifting the control point down, you reduce the output pixel values in a given area, which means you lower the brightness. Now, for a clearer example, let's do the opposite and darken the bright areas of the image. An increase in the output value of this point (upward shift) led to the brightening of the dark areas of the image: the black pixels (with the initial value of 0 0) acquired a more gray tint. In the example below, we took a point in the region of dark tones with coordinates (0 0). In other words, higher (brighter) values are now assigned to the pixels in a given area, which means that the brightness of the video is increased. By moving the control point up, as shown in the illustration below, you increase the output value of the pixels relative to the input value. Meanwhile, the upper right area can be used to adjust the light tones, and when you work with the middle region of the curve, it affects medium tones of the video.Īdjusting the brightness of an image in practice using the arrow keys on the keyboard (up, down, right, left).īy changing the coordinates of the points in the lower left area of the graph, you adjust the dark tones in the image.There are several ways to change the position of control points: Moving the control points (up and down, right or left) of the curve will change the overall color of the image by adjusting the brightness and contrast. ![]() Points in the lower left corner correspond to black color (shadows), points in the upper right corner correspond to white color (light areas of the image).Ī double-click on a specific area of the composite curve provides the necessary control point. That’s why the composite curve is a straight diagonal line passing through the points with coordinates (0 0) and (255 255). Initially, when an image is loaded into the program, all the original pixel brightness values are equal to the output. The maximum pixel brightness value is 255. In the graph, the horizontal axis reflects the original brightness values of the pixels, and the vertical axis - the desired (output) values that you get in the editing process. The composite curve mode is set by default, and when you open the RGB working area, it is indicated by a white circle (see the illustration on the right). Control points are arbitrary points that belong to the curves of the color channels: red, green, and blue. To change these two parameters in VSDC, the so-called “method of shifting control points in the composite curve mode” is used. Working with brightness and contrast of the image is one of the basics of color correction. Changing the brightness and contrast - the basic principles Click on that file, open the ‘View’ tab, select ‘Basic effects’ and click ‘RGB Curves’. ![]() Specifically, we’ll be working with RGB curves to change brightness and contrast levels in VSDC Free Video Editor.ĭownload VSDC to your PC (the program runs on Windows only) How to open the RGB curves dialog windowĪfter installing and launching the program, import the file you want to edit. In this article, we will show you how to process photos and videos using simple color correction techniques. And luckily, in many cases, it is possible, even if you aren’t a professional. There can be many reasons why your footage came out in poor quality but what really matters is whether it can be fixed. ![]() And if it’s an important event you were trying to capture, there comes huge disappointment. Oftentimes even when we use professional cameras for video shooting, we get upsetting results: gloomy or overexposed compositions, glares, black background. ![]()
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