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  • Hi. This is Marty from Blue Lightning TV.

  • I'm going to show you how to create a "Low Poly" portrait from a photo.

  • A "low poly" graphic is a polygon mesh in 3D computer graphics that has a relatively

  • small number of polygons. Open a photo you'd like to use. For the purpose of this video,

  • choose a subject who's looking directly at you. I downloaded this one from

  • We only need to create this effect for half of the face since we'll copy the effect and

  • then flip it to the other side to create the entire face. Before we start to make the polygons,

  • let's prepare our document to ensure that we get the fastest and best results.

  • Go to View and if "Rulers" and "Snap" aren't checked, just click on them.

  • Go back to View, “ShowandGrid”.

  • Go to Edit, "Preferences" and "Guides, Grids & Slices...".

  • In the "Grid" section, choose "Lines" and "Pixels". For this example, I'll choose a gridline every

  • 20 pixels with 1 subdivision. For the color of the grid, I like using 50% grey, because

  • it shows up well on most colors and shades. If your color box isn't grey, click it and

  • type in 0,0 and 50% for its Hue, Saturation and Brightness or you can type in 80, three

  • times. Then, click OK or press Enter or Return to close the windows.

  • It's always a good idea to make a copy of your original image or convert it into a Smart Object.

  • For this example, let's just copy it by pressing Ctrl or Cmd + J.

  • We'll start make polygons on the eyes. Remember, we're only

  • going to working on half of the face and then flip it. For this image, I'll work on the

  • left screen side of her face. Zoom into the eye of your subject by pressing "z" on your

  • keyboard to open your Zoom Tool and dragging over that eye. To reposition it on your canvas,

  • press and hold the Space bar as you drag your image.

  • Open your Polygonal Lasso Tool

  • and uncheck Anti-alias to keep the polygons from having any transparency along their edges.

  • Before we begin, well be making the polygons triangular in shape and their sizes should

  • correspond to areas of your image that have specific angles or consistent color and tonal

  • values. Each time you click on a corner of the grid, it'll snap directly on the corner

  • because we have "Snap to Grid" checked. When you click back onto the original point, you'll

  • see a small circle that let's you know the path is complete. It immediately changes into

  • a selection. Go to Filter, Blur and Average.

  • The colors of the area inside the selection averages out to a flat color.

  • To deselect it, press Ctrl or Cmd + D.

  • To make another polygon,

  • we're going to make a parallel path over one side of the first polygon by clicking

  • on two corners

  • and then clicking on another corner of the grid. Complete the path by clicking

  • on the first point. To repeat the last filter you used, press Ctrl or Cmd + F and then deselect

  • it by pressing Ctrl or Cmd + D. Remember, each polygon is a representation of a color,

  • tone or angle of your subject. Continue these steps to create polygons over all the sections of the entire eye.

  • If you want to zoom out, press Ctrl or Cmd and the minus sign a couple of times.

  • Continue to make triangular polygons that conform to specific areas of angle, or color and tone.

  • For this example, I'll just keep the areas around the face extremely simple,

  • so I'm making the polygons quite large. If you want your subject to be over a solid,

  • flat background, make sure your subject has space around it, so you can ultimately cut

  • it out from its existing background.

  • If you want to create a highlight on the pupil of the eye,

  • zoom into it

  • and make a small triangular, pyramid shape in the grid over the darkest

  • area of the pupil. Fill it with white. Since white is my background color,

  • I'll press Ctrl or Cmd +Delete.

  • Then, I'll deselect it

  • and zoom back out.

  • Next, we'll crop the left screen side of the subject.

  • Open your Rectangular Marquee Tool

  • and drag a selection over the left half of the grid.

  • Press Ctrl or Cmd + J

  • to cut and copy it to its own layer.

  • Press Ctrl or Cmd + T to open your Transform Tool. Go to the left, middle

  • point of the Transform and when you see a horizontal, double-arrow, drag it across until

  • it snaps to the right side of your document. Then, press Enter or Return.

  • Click the Adjustment layer icon and click Levels.

  • Click the clipping mask icon.

  • This will restrict the adjustment layer

  • to effect just the one layer beneath it in the Layers panel.

  • Drag the Input midtones to the right to darken half the face.

  • This gives the center edge of the face the visual appearance of triangular polygons To hide

  • the grid, press Ctrl or Cmd + H.

  • This is Marty from Blue Lightning TV.

  • Thanks for watching!

Hi. This is Marty from Blue Lightning TV.


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B1 中級

フォトショップ。ローポリ! 写真からローポリゴン画像を作成する方法 (Photoshop: Low Poly! How to Create Low Polygon Images from Photos)

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    Jessica に公開 2021 年 01 月 14 日