In XX-th century there was a device, named "densitometer", that was used
to scan photo plates and to measure their optical density. Its extensive use
was in the field of spectrometry - to draw graphs of various spectra.
The present program plays essentially the same role - it is used to measure
optical density of digital photos along a line choosen by user. Its very
application is to get valuable data from snapshots obtained by DIY spectrometers
made of common digital photo and video cameras. However it is not the sole use
of the program. With equal success it can be used to determine some laser beam
profile by scanning photo of a laser spot, or to estimate attenuation constant
for pumping beam passing through some laser rod. There are also hundreeds of
other non spectral applications, where this program may be useful.
Download:
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Executable file for Windows:
densitometerLK_bin.zip (1700 kByte)
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Source code:
densitometerLK_src.zip (202 kByte)
This sourcecode can be compiled by Lazarus free pascal Delphi-like IDE (with intrinsic compiler). You can download Lazarus here.
To compile You need:
- Download lazarus IDE
- Run lazarus installer
- Download sources of the densitometer
- Unpack to a folder of Your choice
- Start Lazarus IDE
- Open the project file of the calculator (has extension *.lpr)
- Press the "Run" button in the top Lazarus IDE menu
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