Picture Lab AP Computer Science Lab Methods Zero Colors Zero Red Zero Green Zero Blue One color Only Red Only Green Only Blue Color Modifications Negate Grayscale Edge Detection Orientation Modifications Mirror Vertical Clear Color Clear Red over certain value Clear Green over certain value Clear Blue over certain value Count Color Count Red over certain value Count Green over certain value Count Blue over certain value Misc Pixelate Quadrants Stripes Collage Average color for row Average color for column