I've been working on a scene where I need a layer to create lighting effect (a brilliant glow). I have trying importing a psh png with the lighting effect and have turned the layer's option to be "overlay" to get a nice glowing effect. However I have noticed in the brighter areas the line work on underlying layers breaks up and looses antialiasing. Basically it looks a bit ordinary with a pixelated edge. Is this normal on "Overylay" or is this a ASP problem? Check out a test file http://www.bunyanfilms.com.au/hightower ... _Test.anme
I have also tried making the lighting effect purely as an AS vector graphic yet the same problem occurred with the line work. The png and the vector looked exactly the same.
Overlay Layer Option
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BunyanFilms
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That is what the overlay blending mode does. It is not a bug.
Create the same set up in photoshop and use "overlay" for the same kind of layer and it creates the same type of "aliasing" on lines and sharp edges. The overlay blending mode is sort of like using the levels adjustment. It blows out the highlights and midtones creating the "aliasing".
The AS file link you posted doesn't contain the image you are using. Image layers are just links to external files. The image is not included with the file so I can't see what it looks like. You could try using a different color for the overlay or not as "bright". You could also render at a higher resolution and scale down if ithis is a big problem. Maybe experiment with additional layers or using transparency instead of overlay.
-vern
Create the same set up in photoshop and use "overlay" for the same kind of layer and it creates the same type of "aliasing" on lines and sharp edges. The overlay blending mode is sort of like using the levels adjustment. It blows out the highlights and midtones creating the "aliasing".
The AS file link you posted doesn't contain the image you are using. Image layers are just links to external files. The image is not included with the file so I can't see what it looks like. You could try using a different color for the overlay or not as "bright". You could also render at a higher resolution and scale down if ithis is a big problem. Maybe experiment with additional layers or using transparency instead of overlay.
-vern
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BunyanFilms
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Thanks Vern
The graphic was just a standard lens flare. I'll check out some other blending method but the way Overlay worked in this particular situation looked good . I may try a duplicated layer of line art that could ease in on its transparency as the "overlay" layer ramps into its full brightness
Here is the Scene
The graphic was just a standard lens flare. I'll check out some other blending method but the way Overlay worked in this particular situation looked good . I may try a duplicated layer of line art that could ease in on its transparency as the "overlay" layer ramps into its full brightness
Here is the Scene
I like that scene. I can see what you are trying to do stylistically. The foreground area with the signs and doors look fantastic but I can see why you are unsatisfied with the look of the characters.
If you have access to an external video compositor with more "effects" or features you may want to look at something that like a "bloom" effect. It creates those over bright highlight or light areas which is what I think possibly is the effect you are after.
I haven't played around yet with simulating those types of effects with AS so I can't think of a way to pull it off... I will be thinking about it though... some ideas are perculating in my head having to do with motion blur.
I know the image below doesn't seem to have anything to do with what we are talking about... but... it uses motion blur and what I find interesting is how the light areas "bloom" when the motion blur sort of... accumulates over time.
I am thinking there might be a way to "fake" the bloom effect using a variation of this technique. When I get a chance I might play around with it.
Something else you may want to try is using layer shading and shadow... I know sounds odd right? Instead of using a dark color for those layer properties use a bright color with some transparency and a HUGE blur radius to create that "bloom" around highlight areas.
These are just crazy ideas off the top of my head without any testing... but that is usually how I come up with stuff.
-vern
If you have access to an external video compositor with more "effects" or features you may want to look at something that like a "bloom" effect. It creates those over bright highlight or light areas which is what I think possibly is the effect you are after.
I haven't played around yet with simulating those types of effects with AS so I can't think of a way to pull it off... I will be thinking about it though... some ideas are perculating in my head having to do with motion blur.
I know the image below doesn't seem to have anything to do with what we are talking about... but... it uses motion blur and what I find interesting is how the light areas "bloom" when the motion blur sort of... accumulates over time.
I am thinking there might be a way to "fake" the bloom effect using a variation of this technique. When I get a chance I might play around with it.
Something else you may want to try is using layer shading and shadow... I know sounds odd right? Instead of using a dark color for those layer properties use a bright color with some transparency and a HUGE blur radius to create that "bloom" around highlight areas.
These are just crazy ideas off the top of my head without any testing... but that is usually how I come up with stuff.
-vern
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BunyanFilms
- Posts: 71
- Joined: Mon Aug 06, 2007 3:24 pm
- Location: Australia
- Contact:
Great information Vern.
I had a go at a shadow technique. Lighter colours had no effect like yellow or white or light blue. Deep hues of these did. Black had the best effects but did give a little darkening around the characters. Unfortunately any interior line work still looked pixelated. As this is from a TV ad I don't have time to fiddle with this too much so I may have to leave off the glow and add it in with Final Cut Pro.
I had a go at a shadow technique. Lighter colours had no effect like yellow or white or light blue. Deep hues of these did. Black had the best effects but did give a little darkening around the characters. Unfortunately any interior line work still looked pixelated. As this is from a TV ad I don't have time to fiddle with this too much so I may have to leave off the glow and add it in with Final Cut Pro.