HP 6200C manual Pixel distribution histogram

Page 74

Pixel distribution histogram

The histogram in the Exposure Adjustment tool is a graph of the distribution of pixels in the selection area. The vertical lines in the histogram show the current settings for Shadows and Highlights.

➊The magenta line in the histogram represents the current setting for Shadows, the darkest areas in the image.

➋The red line in the histogram represents the current setting for Highlights, the lightest areas in the image.

➌The turquoise line appears in the histogram when either eyedropper pointer is positioned over the image. It shows you where the pixels at that place in the image occur in the histogram.

T I P

■Changing the settings for Highlights and Shadows does not change the graph in the histogram.

■Changing the selection area changes the graph in the histogram.

■The Midtones setting is not represented in the histogram.

■The graph in the histogram represents pixel distribution in the input image, not in the image that will be output.

➊➋

Shadows						Highlights

4

		Adjusting images of		Book Contents
		pictures		Book Contents
		pictures

➌

Pixels under the eyedropper pointer

Index	➮ ➮HP PrecisionScan Pro User’s Guide 74

Image 74

Contents HP PrecisionScan Pro Features Support for your new product Restricted Rights LegendHow to use this online document Contents Scanning text Scanner What can you scan? W s c a n n i n g w o r k sPlace the picture on the scanner F u s e r sPushing the button on the scanner Using the Windows Start menuStart the scanning software Launching from another program A t i s T W a I N ?Configure the Scan button 2A tour of the scanning software2 Scanning software window Menus A nI t E wT p u t T y p e O l s L p Displays the HP ScanJet Automatic DocumentToolbar O l b a r B u t t o n sPreview area Enlarging the preview area➊ ➋ ➌ ➍ Info barStatus bar Context-sensitive pointers Selection area pointersPixel value pointers Ready pointerTyping pointer What’s This Help pointerClosing a tool Image adjustment toolsDisplaying a tool Docking a toolCustom resolution Output Resolution toolAutoResolution Images to be displayed on a monitorImages to be printed 100 150 300Sharpen Level tool Dimensions tool HP PrecisionScan Pro User’s Guide Exposure Adjustment tool Color Adjustment tool ➍ ➋Black & White Threshold tool ➊ ➍ ➋What’s This Help in the scanning software window Online HelpQuick Help in the scanning software window HP PrecisionScan Pro HelpHP ScanJet Coach VideosTo view an online manual from the scanning software Online manualsTo view an online manual from the Desktop Save and re-use adjustment settings Dimensions tool values output size and output scaleSaving a set of settings Loading a set of settings Deleting a set of settingsSet preferences Opening the HP PrecisionScan Pro Preferences dialog boxTo change settings Scanner tabBest Quality Sharpening Preview scan when scanner button is pushedBest Quality Scaling Maximum Pixel DepthSelection Area tab Automatically create selection area after a mouse click Automatically adjust exposure after selectionAutomatically adjust color after selection Automatically set the output type after selectionTo delete a resolution default Resolution tabTo add a resolution default Controls tab 3Scanning pictures Quick scan Optional adjustmentsBasic steps for scanning pictures Preview scan Using the Scan button to Preview scanUsing the scanning software to Preview scan Create a selection area Clicking to create a selection area Drawing to create a selection area Removing the selection areaSelecting the entire preview area Selecting the entire zoomed areaMoving the selection area Adjusting the size of selection areaUse the Dimensions tool Use the handles on the borderZoom scan Performing a Zoom scanUsing Undo Zoom Return to the preview image Undo ZoomSet the output dimensions Setting units To set unitsScaling output as a percentage of the original Locking values for output dimension Typing values for output width and heightChoose an output type T p u t t y p e s f o r p i c t u r e sChanging the output type Suggestions for choosing output type Type of original4Adjusting images Pictures Adjustments for color output types Tools for making adjustmentsAdjustment Tool Adjustments for Black & White Scalable vector output type Adjustments for Grayscale output typeAdjustments for Black & White Bitmap raster output type Sharpen Applying the default sharpen level Changing the sharpen levelApplying the default exposure settings Adjust exposureUsing the Exposure Adjustment tool Changing highlights Bringing out details in light areasChanging shadows Bringing out details in dark areasChanging midtones brightness Brightening the imagePixel distribution histogram Using the RGB Meter RGB MeterChecking for clipping of pixels Viewing and removing clipped light areas Viewing and removing clipped dark areasSetting pixel output levels Changing output levelsHP PrecisionScan Pro User’s Guide Changing color balance Adjust colorMoving the indicator circle Decreasing the amount of color Changing color saturationIncreasing the amount of color Applying the default color settings Click the Auto button in the Color Adjustment toolSet output resolution Resolution settings for photographsResolution settings for drawings Applying the default resolutionApplying the default threshold Set threshold for black and white bitmapsChanging the black and white threshold Scan a picture From the Tools menu, select B & W ThresholdSet color channel for black and white bitmaps Eliminating a color from the imageExamples of changing color channels 5Scanning text Scan and convert a block of text Drag-and-drop to another program L e c t i n g T e x tCopy to the Clipboard Save to a fileScan a whole 6Saving scanned Images How you can use the image Print the image Drag-and-drop to another program Drag-and-drop to the Desktop Pasting the image Copy to the ClipboardCopying the image Bitmap Image .bmp Save to a fileFile formats FlashPix .fpxText File .txt GIF Image .gifJpeg Image .jpg Tiff Image .tifSaving the file Reducing file size7Scanning 35mm Slides7 35mm slide adapter Placing the slide and the adapterScan the slide Index Saving image to Help 19 Output Type 17 Scan 15 Tools 18 View To a file 92, 93, 100, 102 scaling 30 Sharpen Level 29, 68 Tools menu 18 ToolTips