"Adobe international certification" Adobe Photoshop adjusts cropping, rotation and canvas size

The original title ：「Adobe International Certification 」Adobe Photoshop Adjust crop 、 Rotation and canvas size

Cut and trim the scanned photos

You can put several photos in the scanner and scan them all at once , This will create an image file .“ Cut and trim the photo ” Command is an automation function , You can create separate image files by multi image scanning .

For best results , Please keep between scanned images 1/8 Inch , And the background （ Usually a scanner bed ） It should be a uniform color without any noise .“ Cut and trim the photo ” The command is most suitable for images with very clear outline . If “ Cut and trim the photo ” The command does not process the image file correctly , Please use the crop tool .

1. Open the scan file containing the image you want to detach .

2. Select the layer that contains these images .

3.（ Optional ） Draw a selection around the image to be processed .

4. selection “ file ”>“ Automatically ”>“ Cut and trim the photo ”. The scanned image will be processed , Then open each image in its own window .

Be careful : If “ Cut and trim the photo ” The command did not split one of your images correctly , Please create a selection boundary around the image and part of the background , Then press and hold while the command is selected Alt key (Windows) or Option key (Mac OS). The modifier key indicates that only one image should be separated from the background .

Straighten the image

The ruler tool provides “ straighten ” Options , The image can be quickly compared with the horizon 、 Alignment of building walls with other key elements .

1. Select the ruler tool .（ If necessary, , Click and hold the straw tool to display the ruler .）
2. In the image , Drag key horizontal or vertical elements .
3. In the options bar , single click “ straighten ”.Photoshop Straighten the image and automatically crop it . To display the image area beyond the boundary of the new document , Please select “ edit ”>“ Restore ”.

Be careful : To completely avoid automatic cropping , Please click “ straighten ” Press and hold Alt key (Windows) or Option key (Mac OS).

Rotate or flip the entire image

Be careful :“ Image rotation ” It's destructive editing , Will actually modify the file information . If you want to non destructively rotate the image for viewing , Please use “ rotate ” Tools .

Use “ Image rotation ” The command can rotate or flip the entire image . These commands do not apply to a single layer or part of a layer 、 Path and selection boundary . If you want to rotate a selection or layer , Please use “ Transformation ” or “ Free to change ” command .

selection “ Images ”>“ Image rotation ” And select one of the following commands from the submenu ：

180 degree Rotate the image half a turn .

90 degree （ Clockwise ） Rotate the image clockwise by a quarter of a turn .

90 degree （ Anti-clockwise ） Rotate the image counterclockwise by a quarter of a turn .

Any angle Rotate the image by the specified angle . If you select this option , Please enter a value between -359.99 and 359.99 The angle between degrees .（ stay Photoshop in , You can choose “ Clockwise ” or “ Anti-clockwise ” Rotate clockwise or counterclockwise .） And then click “ determine ”.

Flip the canvas horizontally or vertically Flip the image along the corresponding axis .

Change canvas size

The canvas size is the fully editable area of the image .“ Canvas size ” The command allows you to increase or decrease the canvas size of an image . Increasing the size of the canvas adds space around the existing image . Reducing the canvas size of the image will crop into the image . If you increase the canvas size of an image with a transparent background , The added canvas is transparent . If the image has no transparent background , The color of the added canvas will be determined by several options .

1. selection “ Images ”>“ Canvas size ”.

2. Do one of the following ：

• stay “ Width ” and “ Height ” Box . from “ Width ” and “ Height ” Select the desired unit of measurement... From the pop-up menu next to the box .
• choice “ relative ”, Then enter the amount to add or subtract from the current canvas size of the image . Entering a positive number will add a part to the canvas , Entering a negative number will subtract a part from the canvas .

3. about “ location ”, Click a box to indicate the position of the existing image on the new canvas .

4. from “ Canvas extension color ” Select an option from the menu ：

• “ prospects ”： Fill the new canvas with the current foreground color
• “ background ”： Fill the new canvas with the current background color
• “ white ”、“ black ” or “ gray ”： Fill the new canvas with this color
• “ Other ”： Use the color picker to select a new canvas color

Be careful : You can also click “ Canvas extension color ” The white square on the right side of the menu opens the color picker . If the image does not contain a background layer , be “ Canvas extension color ” Menu not available .

5. single click “ determine ”.

By increasing the size of the canvas , Make picture frame

By increasing the size of the canvas and filling it with color , You can make picture frames .

You can also use a pre recorded action to create a stylized frame . It works best on photo copies .

1. open “ action ” panel . Or select “ window ”>“ action ”.
2. from “ Action panel ” From the menu “ Picture frame ”.
3. Select one of the frame actions from the list .
4. single click “ Play the selected action ” Button .
5. The action will play , Also create a frame around the photo .