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Spreadsheet

Opens a spreadsheet window for the current image. Pixels can be displayed as decimal integers, hexadecimal integers, RGB values, or hexadecimal RGB values. If a FFT is being displayed, the real or imaginary components can also be displayed as floating point numbers. Changes of pixels on the image (for example, by adding a label or changing the contrast), are immediately reflected in the spreadsheet. Similarly, typing a number in the spreadsheet changes the value of the corresponding pixel (if the number is a valid pixel value). Also, selecting an area on the image automatically causes the corresponding part of the spreadsheet to be highlighted. This gives precise control over the image as a numerical array. A separate spreadsheet can be activated for each image.

Since imal can read and write 1 bit/pixel images as raw bytes, the spreadsheet can also be used as a bitmap editor.


\begin{picture}( 100,100 )(0,0)
\put(0, -210){ \epsfig{file = tnimage_fig16.ps, width=4.1in }}
\end{picture}
Spreadsheet display of an image



root 2010-04-22