Difference between revisions of "Weather Cam Image Handling"

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(changing contrast)
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===changing contrast===
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===changing brightness and contrast===
 
[[FIle:pic5.jpg]]
 
[[FIle:pic5.jpg]]
  
 
Overlay text:
 
Overlay text:
 
<pre>-sigmoidal-contrast 4% -crop 720x490+0+50</pre>
 
<pre>-sigmoidal-contrast 4% -crop 720x490+0+50</pre>

Revision as of 22:13, 13 October 2013

This page is intended to give some examples what Meteobridges weather image conversion with the Linux tool convert can offer. I selected this freely available image from Univerity of Arizona as an example to do some comversions with.

original image (720 x 540)

Pic1.jpg


cut off header, new size (720x490)

Pic2.jpg

Overlay text:

-crop 720x490+0+50


adding weather data as overlay text

Pic3.jpg

Overlay text:

-fill black -draw "fill-opacity 0.7 rectangle 0 520 720 540" -pointsize 12 -fill orange -draw "text 5 535 '[YYYY]-[MM]-[DD] [hh]:[mm]'" -fill white -draw "text 110 535 'Temp: [th0temp-act=F.1:--] °F    Humidity: [th0hum-act.0:--] %    Pressure: [thb0seapress-act=inhg.2:--] inHg    Wind Chill: [wind0chill-act=F.1:--]°F    Wind: [wind0avgwind-act=mph.1:--] mph    Rain: [rain0total-sumday=in.2:--] in'" -crop 720x490+0+50


resize image to 640 x 480 (ignore aspect ratio)

Pic4.jpg

Overlay text:

-fill black -draw "fill-opacity 0.7 rectangle 0 520 720 540" -pointsize 12 -fill orange -draw "text 5 535 '[YYYY]-[MM]-[DD] [hh]:[mm]'" -fill white -draw "text 110 535 'Temp: [th0temp-act=F.1:--] °F    Humidity: [th0hum-act.0:--] %    Pressure: [thb0seapress-act=inhg.2:--] inHg    Wind Chill: [wind0chill-act=F.1:--]°F    Wind: [wind0avgwind-act=mph.1:--] mph    Rain: [rain0total-sumday=in.2:--] in'" -crop 720x490+0+50 -resize 640x480!


changing brightness and contrast

Pic5.jpg

Overlay text:

-sigmoidal-contrast 4% -crop 720x490+0+50