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Sample Luminance Value - After Effects Expression by Animoplex
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| // Sample Luminance Value - Created by Animoplex: www.animoplex.com | |
| // Samples the luma value of a defined area and converts to a specified value within a range. | |
| // Use samplePoint to specify luma location | |
| // Use sampleSize to adjust the sample area | |
| // Last line: 0 - 1 is input, 0 - 100 is output | |
| // Full Tutorial: https://www.youtube.com/watch?v=QkqiaPZJa1Y&t=62s | |
| target = comp("SOURCE COMP").layer("SOURCE LAYER"); | |
| samplePoint= [960,540]; // Sample location | |
| sampleSize= [50,50]; // Sample area (in pixels) | |
| lum = rgbToHsl(target.sampleImage(samplePoint,sampleSize))[2]; | |
| linear(lum, 0, 1, 0, 100) |
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