X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=effects%2Ffrei0r_lightgraffiti.xml;h=9940897e8ef2facc147bab770a43bae21799fbb0;hb=181eec2ee0701990a98d4a058224abb3a208ac3c;hp=68c200303d219cd13763116c31297c0fde070605;hpb=b61d222ad9a2ff4b1ef9f82eff81bf09dd04654f;p=kdenlive diff --git a/effects/frei0r_lightgraffiti.xml b/effects/frei0r_lightgraffiti.xml index 68c20030..9940897e 100644 --- a/effects/frei0r_lightgraffiti.xml +++ b/effects/frei0r_lightgraffiti.xml @@ -5,38 +5,47 @@ Simon A. Eugster (Granjow) - - Sensitivity - - For slowly moving light source try to use a lower sensitivity to obtain a better exposure.]]> - - + Brightness Threshold R+G+B) does a pixel need to be in order to be recognized as a light source?
Increasing this threshold requires brighter light sources (i.e. more white or less color, respectively) but prevents some «false alarms» where semi-bright parts, e.g. hands where colors can change quite a lot compared to the background, are incorrectly recognized as light source.]]> - + Difference Threshold max(dR, dG, dB)), in order to be recognized as light source?
Increasing this threshold makes it harder for light sources to be accepted on bright backgrounds, but decreases the danger of noise or generally bright spots counting as light source.]]> - + Difference Sum Threshold - relative to the background image (dR + dG + dB) have to change until a pixel is recognized as a light source?.
+ relative to the background image (dR + dG + dB) have to change until a pixel is recognized as a light source?
Raising this value might, in some cases, avoid that some light objects lit by the light source are added to the light mask.]]> - + + Sensitivity + + For slowly moving light source try to use a lower sensitivity to obtain a better exposure.]]> + + + Lower Overexposure + + The light mask does not get white immediately when the light source is moving slowly or staying steady.]]> + + Dimming Dims the light mask. Lights will leave a fainting trail if it is set to a value > 0. - + Background Weight Strength of the (calculated) background image. Setting it to 100 paints the light mask directly over the background, without the painting person in the image if the video starts with a «clean» background image. (See the α parameter.) - + α - The Light Graffiti remembers the first frame of the clip it is applied to, so the clip should always start with the painter outside of the video. If the background constantly changes, e.g. on a street, try to set α > 0 to calculate an average background image.]]> + The Light Graffiti effect remembers the first frame of the clip it is applied to, so the clip should always start with the painter outside of the video. If the background constantly changes, e.g. on a street, try to set α > 0 to calculate an average background image.]]> + + + Saturation + Increases the saturation of lights. Show brightness statistics