4/7/2024 0 Comments Four elements trainer 0.6.01c![]() The best clarity, but more like false colour. Next step in improving the clarity - better, but further from natural.īand 1 - Blend = Keep Blue Contrast = Percentage Stretch (value = 0.6).īand 2 - Blend = Keep Green Contrast = Percentage Stretch (value = 0.6).īand 3 - Blend = Keep Red Contrast = Percentage Stretch (value = 0.6). Hopefully, the detail listed above are self-explanatory.īand 1 - Blend = Keep Blue Contrast = Percentage Stretch (value = 0.4).īand 2 - Blend = Keep Green No Contrast.īand 3 - Blend = Keep Red Contrast = Percentage Stretch (value = 0.4). I'm not sure I would consider this a success at obtaining a natural image, but it is reasonable for detail. This is the nearest I got to natural image with acceptable quality (eg clarity). Overlay Control Centre: Options - settings used:īand 8 - Blend = Darken Contrast = Percentage Stretch (value = 1)īand 1 - Blend = Multiple Contrast = Percentage Stretch (value = 0.4) Colour Grade = Red and Green output range 0.īand 2 - Blend = Keep Green Contrast = Percentage Stretch (value = 0.4) Colour Grade = Red and Blue output range 0.īand 3 - Blend = Screen Contrast = Percentage Stretch (value = 0.4) Colour Grade = Green and Blue output range 0. NOTE: All the following images are 20% of original and therefore suffer in quality for uploading. Darkness and quality were poor, so I added another file / layer - Band 8 image. Further experimentation resulted in successful colourisation, but dark - just as Mike said in his reply. So, I worked on each of the layers seperately. You'll see I highlighted all 3 layers (files, bands) and worked on them together. Go back to the previous image with the greyscale L7. Thanks Mike - I'll come back to your response in a minute.įirst, the results of a disturbed nights sleep. Just to prove the 3 grey images make a coloured image… Put these into GIMP and I get proper colour images? The only colouration I get is through some of the blends. Try as I may, I cannot get these, or any other combination, of such images to produce colour. I loaded 3 separate Landsat 7 files downloaded from Global Land Cover ( ) corresponding to Bands 7, 4 and 2. What is needed is the full set of 8 band data for download in individual bands. I assume there is no NIR or panchromatic in these data sources - is this correct? There was no difference between 342 and 742. I tried the experiment again, creating 8 bands… ![]() if RGB channels are correct, should there be an additional grey / monochrome channel? how can I select Band-4 to get NIR? - or any other band beyond 3. ![]() should GM have an 8 Band menu instead of RGB? When dropping the menu, 4 bands show, but Band 4 is not really usable - that I know of - because it need NIR. On the left - how GM normally presents the RGB Bands.Īll the information I have read suggests this should be presented as on the right.(See next Post)Īll the information I have read suggests this should be presented as on the right. …and exported as 4-band - selecting No here. I downloaded some Landsat 7ETM+ natural PS to test… Please confirm or correct me on this - I’m no expert. Natural 321 that is pan sharpened becomes 321+8.Īgain, as I understand it, it is Band 8 (monochromatic 15m res.) that makes the lower resolution imagery sharper. For Landsat natural images this would be BGR - confusing. This may simply be a mix up with colour notation - RGB. I’m sure that GM should present the Bands as Blue, Green, Red not Red, Green, Blue. These do not allow access to individual bands.īand 4 is identified with Red as well as Band 1.Īs I understand it - please correct me and / or clarify - that: ![]() I would like access to each of the Landsat ETM+ bands separately. It is not possible to download the individual elements - as far as I can tell.
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