Replacing picture backgrounds with Photoshop channels

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1, the replacement background is a common image processing operations, for different backgrounds can be different methods, which use the channel to create the appropriate selection to replace the background, is the most accurate method.

Material 1

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Material 2

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2, open the image.

3, observe the material, you can see the structure of the building's thought to form the rhythm of beauty, but for the scenery outside the window is not satisfied, so want to replace the background. For such a complex background, it is obvious that you cannot create a magic wand tool or a color range, which requires a channel to create a selection.

4, the transfer of the need to replace the background image.

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5, create a selection in the channel. Open the channel panel and select a channel with a larger contrast. Here, select the blue channel and copy the blue channel as the copy channel. Select the image/Speed/curve command, open the curved panel, and move the top and bottom points of the curve to increase the contrast of the picture.

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6, through the window can see some buildings on the airport, these are not needed, in the toolbox to select the Brush tool, set the appropriate brush diameter and hardness. Paint the unwanted scenes out of the area with a paintbrush.

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7, hold down the CTRL key, click the current channel with the mouse, see the image has ants line, load this channel constituency.

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8. Replace the background in the layers panel. Click the RGB composite channel to see the color image. Click the Layers panel to reopen the alternate background layer and click Create Layer mask in the layers panel. You can see that a layer mask appears on the current layer, and the layer mask created by the channel you just loaded will just keep the lounge window partially.

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9, the scenery outside the window has been replaced, these scenery is not satisfied can continue to adjust. Select the Mobile tool in the toolbox, and press and hold the blue and white cloud image to move to the appropriate place, as shown.

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Category:

• PS Image Processing