HighlightFlare Tab

Highlight flare settings are applied here.

Flare Tab

Brightness Textbox and Slider

Specifies the highlight flare brightness.

(From left: 0.5, 1.0, 2.0; Attenuation set to Quadratic)

Scale Textbox and Slider

Specifies the highlight flare scale.

(From left: 0.1, 0.5, 1.0; Quadratic attenuation)

Attenuation Pop-up Menu

Select Linear, Quadratic, or Fourth Power for the highlight flare attenuation.

(From left: Linear, Quadratic, Fourth Power)

Streak Tab

Streak Pop-up Menu

Select the type of streak to add. Choose None, Line, Cross, Hexagon, or Octagon.

(From left: None, Line)

(From left: Cross, Hexagon, Octagon)

Random Textbox and Slider

Specifies the randomness of the streak.

(From left: 0.1, 1.0, 2.0)

Brightness Textbox and Slider

Specifies the brightness of the streak.

(From left: 0.5, 1.0, 2.0; Random: 0.5)

Scale Textbox and Slider

Specifies the scale of the streak.

(From left: 0.5, 1.0, 2.0; Random and Brightness: 1.0)

Sharpness Textbox and Slider

Specifies the sharpness of the streak.

(From left: 0.5, 1.0, 2.0; Random and Brightness: 1.0)

Angle Textbox and Slider

Specifies the angle of the streak.

(From left: 30, 90, 180; Random: 0.5; Brightness: 1.0)

Spectrum Checkbox

Specifies whether to draw the light spectrum at the ends of the streaks.

(Left: with spectrum; right: without spectrum)

General Group

Sampling Rate Textbox and Slider

The default setting is the draw the highlight flare every 1 pixel, but by increasing the space between samples render time can be reduced. Adjust the sampling rate to suit the purpose of the final image. Lowering the sampling rate below 1 help avoid jaggy lines.

Brightness Regulation Textbox and Slider

Averages the brightness of the highlight flare for the entire image. Reflective and transparent objects can easily get extremely bright highlights, brighter than other objects in the scene. Here you can see that in the glass. We need to reduce the brightness in areas such as that.



(From top: no streaks, Streak Brightness 0.1 with Brightness Regulation 1, and Streak Brightness 1.0 with Brightness Regulation 10)

Threshold Group

Input Pop-up Menu

Select Illuminance, Brightness, R, G, or B for the highlight flare threshold type.

Value Text Box

Specifies the threshold value for the flare. Highlight flare is applied to areas with brightness above the threshold value. Smaller values will cause highlight flare at lower brightnesses, whereas at higher values highlight flare will only be applied to the brightest areas.

(From left: Illuminance 0.59, 0.96, 1.16)

Histogram

Shows the histogram of light brightness. The threshold position is shown by the red line. Clicking or dragging in the histogram will change the threshold value. The area to the right of the red line shows the lights that will have highlight flare.