02-26-2016, 10:28 AM
I started writing code in C# (what I normally write). I knew it would need to be converted to C to get the needed performance from the Pine64 so started looking for tools that already exist. Knew about ImageMagick but had no idea everything a person could do with it. Basically, here is what I do to detect a meteor...
dcraw -T -W F123.CR2
convert F123.tiff -modulate 200% -colorspace gray -quiet -canny 0x1+5%+20% -hough-lines 1x1+60 F123.mvg
The first line uses dcraw to convert a Canon RAW image file to a TIFF.
The second line first brightens the image by 200%, then makes it monochrome, then uses an ImageMagick tool called the Canny Edge Detector, then the tool called Hough Lines is used to detect edges that are lines.
The Python scripts I am building, taking into account the image, will change brightness, Canny parameters, Lines paramaters and even contrast and noise removal to detect the meteors. The final detection is simple - look in the final output .mvg file (which is just a text file with line coordinates) with lines that have similar slopes within a certain tolerance - and there you go.
Still trying to figure out how to filter out airplanes.
dcraw -T -W F123.CR2
convert F123.tiff -modulate 200% -colorspace gray -quiet -canny 0x1+5%+20% -hough-lines 1x1+60 F123.mvg
The first line uses dcraw to convert a Canon RAW image file to a TIFF.
The second line first brightens the image by 200%, then makes it monochrome, then uses an ImageMagick tool called the Canny Edge Detector, then the tool called Hough Lines is used to detect edges that are lines.
The Python scripts I am building, taking into account the image, will change brightness, Canny parameters, Lines paramaters and even contrast and noise removal to detect the meteors. The final detection is simple - look in the final output .mvg file (which is just a text file with line coordinates) with lines that have similar slopes within a certain tolerance - and there you go.
Still trying to figure out how to filter out airplanes.