Stylization strength controls how much the style from the artistic style image is applied to the input photo. Set smaller to preserve more original photo details. Set larger to make style more intense.
Brush size (size of style patterns): affects the size of the style patterns reproduced on the stylization.
Foreground preservation controls how much the foreground objects are preserved during applying artistic style. Generally this should be higher for portrait rendering and smaller for landscape scenes rendering without specific foreground.
Person preservation controls how much people, their faces and skin are preserved during applying artistic style.
Skin preservation controls how much skin of people is additionally preserved (on top of people preservation).
Geometry preservation controls how many borders of objects, displayed on your photo are preserved.
Set this to lower value for fuller and more vivid style expression. Set this to higher value if you want to preserve particular details of the foreground objects, such as faces, gestures, etc.
Smoothness of color change controls the smoothness of color changes on the stylization. More distant objects are smoothed more. Increase this value if you want to highlight the foreground objects by blurring background objects.
Account for distance is controlled by Less/more preserve foreground parameter - increase it, if you want more diverse smoothing for close and distant objects.
To generate stylizations in resolution higher than Standard you need to buy a higher resolution service in the services section.
HD resolution outputs stylization with HD quality (2 megapixels, e.g. 1400x1400 image). This counts for single usage of higher resolution service.
Ultra HD resolution outputs stylization with Ultra HD quality (6 megapixels, e.g. 2500x2500 image). This is more computationally expensive and counts for 10 usages of higher resolution service.
Please note, that stylization result may be different for input photos of different resolutions, because style transfer algorithm internally works with fixed resolution.
Artistic style is applied unevenly across the image. Foreground is less, background - more.
Style strength change controls how style strength changes across the image:
Colors controls color scheme of resulting stylization:
When style foreground type is set to left to right, right to left, top to bottom or bottom to top, this controls the relative position on the image where foreground changes, leading to gradual change in artistic style strength.
Default value 50% means that style starts being applied in the middle of width for left to right or right to left and in the middle of height for top to bottom or bottom to top.