jAlbum/Edit

1. View and change information about the image in the column to the right.

• Histogram: A graphical representation of the tonal distribution in a digital image that plots the number of pixels for each tonal value.
• General:
• Variables:
• Skin specific....???

2. Edit the image in the top menu

Note that the tools in edit mode are non-destructive, for example cropping an image does not remove pixels, it merely masks them so that the crop can be altered or undone. Edit tools that have sliders can be adjusted using the arrow keys, up/down and left/right, by first clicking on the slider to select it.

1. Exit from the edit mode, returning to the explore mode.
2. Exclude or include selected item(s) from the album. Excluding an item keeps it within the project but excludes it from the generated album, this button toggles the state. An excluded item has a red circle with a white bar in it, see figure 2.2 for an example of an excluded item.
3. Rotates the image 90° to the left or to the right. Rotation occurs as soon as you click on the tool icon, there are no options to adjust.
4. Crop: Cut the edges of to improve the composition. There are several options within the crop tool, see figure 3.2, which, as for all tool options, can be hidden or revealed by clicking on the small right pointing triangle next to the tools name.
   
   1. Adjustment points: You can hover over the image and click and drag on any of the white adjustment points. The midpoints adjust just the width or height whilst the corner points adjust both. The cursor changes to indicate the type of movement allowed.
   2. Keep Ratio: If this option is selected then the predefined ratios (3.) are disabled, along with the height/width adjustment (1.) midpoints, and the aspect ratio is constrained to that of the un-cropped image. To crop the image click and drag on a corner adjustment point. You can also click on the image and drag the cropped area of the image around. With Keep Ratio un-checked the aspect ratio can still be retained by holding down the SHIFT key whilst dragging an adjustment point.
   3. Predefined Ratio: With keep ratio deselected you can click on this drop down menu and select from a range of crop ratios, such as Golden Ratio, 1:1, 4:5. Having used a predefined ration you can still manually adjust by clicking and dragging the adjustment points at will.
   4. Landscape/Portrait mode: The default orientation is landscape but it can be toggled to portrait. Changing the orientation will result in the crop selection being reset, so set this option first if needed.
   5. Apply: As for all of the edit tools with options, having previewed your edits you need to apply them before exiting the tools interface. That includes switching from say, the crop to the enhance tool.
   6. Cancel: Having previewed the changes you decide not to apply the effect, you can press cancel, which will exit the tool but leave you in edit mode, or you can go directly to another (enabled) tool.
5. Straighten: Straightens the image, rotating to any given angle.
   
   1. You can click on the image and drag to rotate.
   2. Angle: You can enter any absolute angle, either positive or negative, to rotate the image a precise amount. For example typing 90 and then pressing Enter will rotate the ninety degrees clockwise, typing -90 would be counter clockwise. Alternatively you can click on the image and drag (see 1. in the figure) to rotate. A guide line will appear from the centre to the cursor and a second line will appear as you drag the cursor around. The rotation angle, between 0 and +/- 180, will be shown in the box.
   3. Background color: Selects the color of the canvas that the rotated image ‘sits on’. For example selecting ‘keep size’ or ‘enlarge’ as the Mode and rotating the image will result in the image bounds being filled with the selected color.
   4. 
      Mode: Crop, Keep size and Enlarge. Crop will expand the rotated image, within the original image bounds, so that there is no background showing. Keep size will rotate the image and add background pixels as required to fill blank spaces. Parts of the image will be cropped out. Enlarge will reduce the rotated image so that it all fits within the frame, adding background pixels ass required. See figure to the right.
   5. Show Grid: If selected a grid is overlaid to help visualize the rotation, for example to fix horizontal or vertical alignment. The grid color is fixed so it may help to adjust the background color to make the alignment and then change it again, depending on the mode selected above.
   6. Apply: Saves your edit.
   7. Exit: Exit without saving edit.
      
6. 
   Flip: Flip the image horizontally or vertically.
7. Auto correct: Instantly improve the look of the image by automatically adjusting the colors, levels and/or contrast of the image. You may want to open the histogram tool at the same time, to see the changes graphically. By selecting Enhance all, jAlbum attempts to correct colors, contrast and brightness, all in one go.

   Auto color: This tries to balance the colors thereby removing any color cast.

   Auto contrast: This ensures that the image uses the maximum range of values for brightness.

   Auto levels: This spreads the the range of values for each of the colors, ensuring the widest range possible is used.

8. Enhance: Adjust the brightness, contrast and saturation of the image to improve the look of an image. Sometimes the auto-correct tool does not quite do what you want, in these cases the enhance tool is better suited, as it gives you control over the adjustments. For all three controls the range of values that can be entered is -100 to +100, or drag the slider of each to adjust as required. It is recommended that you open the histogram tool at the same time, to see the changes graphically.

   Brightness: Moves the luminance values towards the black (negative values) or white point.

   Contrast: Compress (negative values) or expand the luminance values within the image. Increases or decreases the contrast between the luminous and the dark parts of the image.

   Saturation: Defines a range from pure color (+100) to gray (-100). Desaturates (negative values) or saturates the colors, making the image fully desaturated will remove all color information, resulting in a gray scale image. Saturation influences the vividness of the the colors in an image.

   Reset all: Returns all three settings to zero, leaving the image unadjusted.

9. Gamma: Change gamma value for each color channel: red, green and blue. Adjust the way highlights, mid-tones and shadows are treated, in a non-linear way, to correct for differences between source and target mediums.

It is probably a good idea to open the histogram tool when adjusting the gamma.

1. Effects:
2. Undo last applied tool and redo last undone tool.