Project 1: Image Scissors - Artifact

Eugene Hwang
CSE 455, Winter 2004

Artifact

I used a total of two images for this stunning composite of myself and South Korean actress Jeon Ji-hyun:

Originals

These are the original images:

The Journey...

Step 1: Pre-editing (my photo)

I edited the picture of myself substantially with Photoshop prior to using the scissor tool on it, to make myself look better. I like to think it was for consistency purposes, so that I don't look so average next to a movie star, but I'm probably just a narcissist. Using median filters in selected areas, I "airbrushed" my blemishes out, then eliminated the blue-eye effect in the original picture. I also had to use the clone stamp to iron out blemishes where the hair prevented the use of just normal median filters. Directly prior to using the scissoring tool, this was the image of myself I ended up with:

Step 2: Pre-editing (Jeon Ji-hyun's photo)

I cut the text out of the bottom-right hand corner of the original image, as this would interfere with cutting and make it substantially more annoying. Then, I expanded the canvas size of the image, and padded it out with magenta. This because Jeon Ji-hyun's head sticks out over the top of the image, and I wanted it to be considered an edge. This is a compressed version of what the modified picture looked like:

Step 3: Slicing and Dicing...

I cut my head out of my own image, and I cut Jeon Ji-hyun's arm, body, and Cha Tae-Hyun's (the guy) uniform out separately. These are the masks and contours I ended up with:

Step 4: Compositing

After applying the masks, I transformed my head to roughly fit in where Cha Tae-hyun's head had been before. Then, I anti-aliased each cutout using this procedure:

  1. Run edge-detection filters.
  2. Raise contrast until edges are in black and non-edges are white.
  3. Use the edge images as masks for a copy of the original image.
  4. Blend the masked and original images, tweaking the opacity until the edges look anti-aliased.
And, voila! Finished artifact.