Making color effects in Black-and-white images

Implementation effect: A full color picture, need to gray, but must preserve the color of the area block. Production purpose: Familiar with Lasso tool, FW filter Production steps: 1, open the processing of the picture 2, we need to keep the palm of the picture in color, and the picture background is turned into Black-and-white two-color. 3, select the "Polygon Lasso Tool" in the toolbar, select the "Edge, anti-aliasing" in the generic panel, and choose the palm figure. This step requires forestall. 4, the Palm part of the display flashing dotted box, indicated as the selection area. 5, in the selection, right-click, select the shortcut menu, "Modify the selection box, reverse." 6, first deal with the background color, select the "Command" menu, "creative", "convert to grayscale image." 7, the simple picture effect production completes. If you also need to color part of the color processing, you can select the area first to the palm part. Then select the Filter menu, adjust color, hue/saturation, tick color in the pop-up window, and then adjust the slider to handle it.