skimage make light spots lighter and dark spots darker

Enhance Image Contrast with skimage's Luminosity Blending Mode and Curves Adjustment

Image contrast plays a crucial role in making your visuals stand out, drawing attention to important details, and creating a visually appealing composition. In this article, we'll explore how to use skimage's Luminosity blending mode and curves adjustment to make light spots lighter and dark spots darker, resulting in a more striking and engaging image.

To begin with, go to the General Blending section and set the Blend Mode to Luminosity. This will allow you to manipulate the brightness of your image without affecting its color. You'll notice that some areas previously affected by the curves adjustment will start to regain their original colors, giving your image a bit more pop.

Next, select the Curves adjustment layer from the Layers panel and choose Blending Options from the dropdown menu. This will enable you to adjust the curve of your image's brightness levels. The entire image will become lighter as all pixels are affected by this adjustment. You can also use the On-Image Adjustment tool (icon with a pointing finger) to add a new point on the curve by clicking and dragging upwards in a shadowy area of your image.

Focus on the darker areas of the image, ignoring any changes to the light parts. In the Properties panel, add a new point to the curve and move it upwards. This will lighten the shadows and create a more dramatic contrast between light and dark areas.

To apply these adjustments, go to Layer > New Adjustment Layer > Curves, which will add a new adjustment layer above your Background layer in the Layers panel. You can experiment with different techniques to achieve the desired effect, and we encourage you to share your methods with others for inspiration and learning.

By combining skimage's Luminosity blending mode and curves adjustment, you'll be able to create striking images with enhanced contrast that draw attention to important details and add depth to your visual composition.

Skimage make light spots lighter and dark spots darker