Pixels to Pictures
Introduction 3 steps 1 pixel Hexadecimal Red-Green-Blue Colors from 0-255 17 million colors More pixels = better Two parts of a file Overview Options Pixel positions Pixel values Brightness Brightness example Contrast Contrast example Color Color example ND grad Sharpen Blur Acquiring an image Scanners Scanner specs Resolution Bit depth & DMAX Other Digital cameras Sensor types Digicam pixels
Introduction 3 steps 1 pixel Hexadecimal Red-Green-Blue Colors from 0-255 17 million colors More pixels = better Two parts of a file Overview Options Pixel positions Pixel values Brightness Brightness example Contrast Contrast example Color Color example ND grad Sharpen Blur Acquiring an image Scanners Scanner specs Resolution Bit depth & DMAX Other Digital cameras Sensor types Digicam pixels
Four into one
Interpolation More sensors Print size Output What is resolution? Dots vs. pixels Printer resolution Output resolution Print size 2 Enlarging Formats Conclusion Links Software
Four Pixels into One
Combining information to make a full-color pixel
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| 4 digital camera "pixels" | = | One computer file "pixel" |
• The computer circuitry in digital cameras combines information from red, green and blue CCD pixels to create a full-color digital file pixel.
• Fortunately, that doesn't mean a camera with 4 million sensor pixels generates a file with only 1 million pixels...
