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23 Cards in this Set
- Front
- Back
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What are the different types of scanners? |
Flatbed, Sheet-Fed, Handheld, and Drum |
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What is the other method of acquiring digital images besides scanning? |
Digital Photography |
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Resampling an image is often referred to as _______. |
Scaling |
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Scaling an image up usually deteriorates the image quality somewhat. What happens in terms of pixels and scaling up and down? |
Scaling up adds new pixels, scaling down removes pixels. |
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The Apple iPhone 4S camera can take a digital photographs with pixel dimensions of 3264 X 2448 pixels.
A. Show the math that the resolution capability of the camera is 8 megapixels. B. Show the math that with these pixel dimensions, the physical dimensions of the printed image are about 10-Inch ' 8-Inch if you print at 300 ppi. |
A. 3264 X 2448= 7,990,272 = 8 MegaPixels B. 3264/300 ppi = 10.88 2448/300 ppi= 8.16 |
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Suppose that you scan a 3 inch by 5 inch photograph in at a resolution of 300 ppi.
What are the pixel dimensions of the scanned image? |
900 X 1500 Pixels |
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Suppose that you scan a 3 inch by 5 inch photograph in at a resolution of 300 ppi.
What will the physical dimensions of the image be if you print it at 300 ppi, without changing the image's pixel dimensions? |
3 inches X 5 inches |
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Suppose that you scan a 3 inch by 5 inch photograph in at a resolution of 300 ppi.
What will the physical dimensions of the image be if you print it at 600 ppi, without altering the image's pixel dimensions? |
1.5 inches X 2.5 inches |
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Suppose that you scan a 3 inch by 5 inch photograph in at a resolution of 300 ppi.
What will the physical dimensions of the image be if you print it at 150 ppi, without altering the the image's pixel dimensions? |
6 inches X 10 inches |
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True or False: When a digital image is printed, each image pixel is represented by one printer ink dot. |
False |
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The "per inch" in the units dots per inch and pixels per inch is in ________. |
Linear inches |
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True or False: The optimization of tonal adjustment at the time of capturing images-- scanning or digital photography-- does not matter because you can always extend the tonal range of the image to any extent afterward in Photoshop to recover the missing color information. |
False |
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What are the general steps of image retouching of a scanned image? |
1) Crop and straighten the image 2) Remove dirt and dust 3) Adjust the overall contrast or tonal range of the image 4) Remove color casts 5) Fine-tune specific parts of the image 6) Sharpen the image |
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What kind of images are GIF files most appropriate for? |
Images with big areas of solid color |
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What kind of images are JPEG files most appropriate for? |
Continuous-tone photographs and images with lots of gradients |
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In scanners, resolution can be used in two different ways, what are they? |
1) Optical-- deals with # of sensors 2) Enhanced-- adding more pixels
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What photoshop tool can be used to crop and straighten an image? |
Crop Tool |
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What photoshop tool can be used to repair small imperfections? |
Clone Stamp, Healing Brush |
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What photoshop tool can be used to adjust the overall contract or tonal range of the image? |
Image >Adjustment > Levels >Curves Image> Auto Tone Image> Auto Contrase |
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What photoshop tool can be used to remove color casts? |
Image > Adjustments > Color Balance Image > Adjustments > Auto Color |
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What photoshop tool can be used to fine-tune specific parts of the image? |
Dodge and Burn Tool Clone Stamp Tool |
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What photoshop tool can be used to sharpen the image? |
Filter > Sharpen > Unsharpen Mask |
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List the categories of selection tools in terms of the way they are designed to work? |
Predefined Shapes Lasso By Color By Painting with a Brush By drawing an outline around the area
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