qr code reader java source code and click the units you want, such as Pixels in Software

Printing Code 3 of 9 in Software and click the units you want, such as Pixels

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3 Click to establish the upper-left corner of the
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selection, and then drag inside the marquee selection to position it Continued
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The Magic Wand tool s Options bar, shown in Figure 5-2, gives you more control over the tool s selections The Refining Edges QuickFacts gives you information about advanced edge control
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Photoshop CS4 QuickSteps Making Selections PC QuickSteps Getting to Know Your PC
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CONSTRAINING YOUR SELECTIONS
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(Continued) MAKE A SELECTION OF A FIXED-ASPECT RATIO You can constrain the aspect ratio of a selection so that,
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Contains tool presets Add to the existing selection
Select the intersection of the existing selection and a new one
Click to smooth out the jagged edges of selections
Click to sample colors from the composite image
for example, it is twice as tall as it is wide, regardless of the actual size of the area selected With the Rectangular Marquee or Elliptical Marquee tool selected:
Create a new selection Subtract from the existing selection The higher the tolerance, the more colors will be selected Click to select only adjacent pixels of the same color Click for a selection of refining options for edges
1 From the Options bar, click the Style down arrow
and click Fixed Ratio
2 Use the scrubby slider to set the ratio by dragging
over the labels, or type directly into the Width and Height text boxes
Figure 5-2: For more control, use the Magic Wand Options bar
MAKE CONTIGUOUS AND NONCONTIGUOUS SELECTIONS WITH THE MAGIC WAND TOOL
3 Drag in the document window to create the selection 4 After making the selection, you can reposition it by
dragging inside the marquee lines
If you click Contiguous on the Magic Wand Options bar, the tool will select only pixels of similar color that directly neighbor actually touch one another Pixels of the same color elsewhere in the image will not be selected
Both Fixed Size and Fixed Aspect Ratio settings for the Marquee selection tools offer value-swapping: you can reverse the orientation of your proposed selection with just a click on the Swaps Height and Width icon So, for example, if you set up a 5 7-inch aspect ratio and then decide you want it to be 7 5, click the Swaps Height and Width icon and you re all set to select
If you deselect Contiguous on the Magic Wand Options bar, the tool will select all pixels of similar color, regardless of their location within the image
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Photoshop CS4 QuickSteps to Making Selections PC QuickSteps Getting Know Your PC
Use the Quick Selection Tool
The Quick Selection tool (grouped with the Magic Wand tool) is used by stroking over an image area The tool seeks similar color values, and then creates a marquee selection that stops when it detects dissimilar colors it s indeed quick and invaluable when you need to select photo areas that are well defined by differing color values Like the Magic Wand, after you make an initial stroke in an image, the Options bar reveals Add To and Subtract From operation buttons, as well as the Refine Edge button (see the Refining Edges QuickFacts) By adjusting the size and hardness of the Quick Selection Brush tool on the Options bar drop-down list, you can get into intricate edges of flower petals, machine parts, and similar photo areas Figure 5-3 shows the ease and accuracy of the tool when an image clearly has well-defined color edges in its elements
When you have a complicated selection to make, you can sometimes use the Magic Wand tool to select the background based on color, and then use the Inverse feature to select what you really want This only works if the background is of a similar color it won t work on a scenic background when you re trying to select a person, for instance
NOTE
The quality of color, specific to the Magic Wand, the Quick Selection tool, and the Select | Color Range command, applies to both hue and tone So if you have a monochrome image, such as a brick wall, don t be deterred from using these color selection tools If a photo doesn t have pronounced colors but has a lot of variations in brightness (tone), you can indeed use these selection tools Figure 5-3: Use the Quick Selection tool instead of the Magic Wand when electing both geometry and similar colors
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QUICKFACTS
REFINING EDGES
The Refine Edge button appears whenever you ve made a selection When you click the button, the dialog box offers numerous controls for finessing the selection edge, but not the general shape of the selection itself Your options are as follows, for adjusting the selection edge and previewing it:
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