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https://github.com/SatDump/SatDump
synced 2026-08-13 17:47:30 -04:00
added back NDWI/NDVI and they're better, faster, stronger like Daft Punk
This commit is contained in:
RAD750
parent
97da24e43a
commit
7ee2e635be
6 changed files with 47 additions and 111 deletions
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@ -141,6 +141,7 @@
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},
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{
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"name": "NDVI",
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"expression": "cch1=(1, sun_angle_compensated_reflective_radiance, 0.000000, 46.203000);cch2=(2, sun_angle_compensated_reflective_radiance, 0.000000, 97.050700);lut=lut(lut/NDVI.png);lut(0, ((cch2-cch1)/((cch2+cch1) == 0 ? 0.000001 : (cch1+cch2))+1)/2, 0),lut(0, ((cch2-cch1)/((cch2+cch1) == 0 ? 0.000001 : (cch1+cch2))+1)/2, 1),lut(0, ((cch2-cch1)/((cch2+cch1) == 0 ? 0.000001 : (cch1+cch2))+1)/2, 2)",
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"image": {
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"geo_correct": true
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},
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@ -148,6 +149,7 @@
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},
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{
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"name": "NDWI",
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"expression": "cch2=(2, sun_angle_compensated_reflective_radiance, 0.000000, 97.050700);cch3a=(3a, sun_angle_compensated_reflective_radiance, 0.000000, 5.416650);lut=lut(lut/NDWI.png);lut(0, 1-((cch2-cch3a)/((cch2+cch3a) == 0 ? 0.000001 : (cch3a+cch2))+1)/2, 0),lut(0, 1-((cch2-cch3a)/((cch2+cch3a) == 0 ? 0.000001 : (cch3a+cch2))+1)/2, 1),lut(0, 1-((cch2-cch3a)/((cch2+cch3a) == 0 ? 0.000001 : (cch3a+cch2))+1)/2, 2)",
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"image": {
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"geo_correct": true
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},
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@ -8,6 +8,22 @@
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{
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"name": "321",
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"expression": "ch3, ch2, ch1"
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},
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{
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"name": "NDVI",
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"expression": "cch1=(3, sun_angle_compensated_reflective_radiance, 0.000000, 46.203000);cch2=(4, sun_angle_compensated_reflective_radiance, 0.000000, 97.050700);lut=lut(lut/NDVI.png);lut(0, ((cch2-cch1)/((cch2+cch1) == 0 ? 0.000001 : (cch1+cch2))+1)/2, 0),lut(0, ((cch2-cch1)/((cch2+cch1) == 0 ? 0.000001 : (cch1+cch2))+1)/2, 1),lut(0, ((cch2-cch1)/((cch2+cch1) == 0 ? 0.000001 : (cch1+cch2))+1)/2, 2)",
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"image": {
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"geo_correct": true
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},
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"description": "descriptions/NDVI.md"
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},
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{
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"name": "NDWI",
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"expression": "cch2=(4, sun_angle_compensated_reflective_radiance, 0.000000, 97.050700);cch3a=(7, sun_angle_compensated_reflective_radiance, 0.000000, 5.416650);lut=lut(lut/NDWI.png);lut(0, 1-((cch2-cch3a)/((cch2+cch3a) == 0 ? 0.000001 : (cch3a+cch2))+1)/2, 0),lut(0, 1-((cch2-cch3a)/((cch2+cch3a) == 0 ? 0.000001 : (cch3a+cch2))+1)/2, 1),lut(0, 1-((cch2-cch3a)/((cch2+cch3a) == 0 ? 0.000001 : (cch3a+cch2))+1)/2, 2)",
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"image": {
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"geo_correct": true
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},
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"description": "descriptions/NDWI.md"
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}
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],
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"default": {
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@ -311,7 +311,23 @@
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"image": {
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"geo_correct": true
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}
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}
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},
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{
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"name": "NDVI",
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"expression": "cch1=(1, sun_angle_compensated_reflective_radiance, 0.000000, 46.203000);cch2=(2, sun_angle_compensated_reflective_radiance, 0.000000, 97.050700);lut=lut(lut/NDVI.png);lut(0, ((cch2-cch1)/((cch2+cch1) == 0 ? 0.000001 : (cch1+cch2))+1)/2, 0),lut(0, ((cch2-cch1)/((cch2+cch1) == 0 ? 0.000001 : (cch1+cch2))+1)/2, 1),lut(0, ((cch2-cch1)/((cch2+cch1) == 0 ? 0.000001 : (cch1+cch2))+1)/2, 2)",
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"image": {
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"geo_correct": true
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},
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"description": "descriptions/NDVI.md"
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},
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{
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"name": "NDWI",
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"expression": "cch2=(2, sun_angle_compensated_reflective_radiance, 0.000000, 97.050700);cch3a=(3, sun_angle_compensated_reflective_radiance, 0.000000, 5.416650);lut=lut(lut/NDWI.png);lut(0, 1-((cch2-cch3a)/((cch2+cch3a) == 0 ? 0.000001 : (cch3a+cch2))+1)/2, 0),lut(0, 1-((cch2-cch3a)/((cch2+cch3a) == 0 ? 0.000001 : (cch3a+cch2))+1)/2, 1),lut(0, 1-((cch2-cch3a)/((cch2+cch3a) == 0 ? 0.000001 : (cch3a+cch2))+1)/2, 2)",
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"image": {
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"geo_correct": true
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},
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"description": "descriptions/NDWI.md"
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},
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],
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"default": {
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"calibration_ranges": {
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@ -177,7 +177,19 @@
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},
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{
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"name": "NDVI",
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"expression": "cch1=(1, sun_angle_compensated_reflective_radiance, 0.000000, 46.203000);cch2=(2, sun_angle_compensated_reflective_radiance, 0.000000, 97.050700);lut=lut(lut/NDVI.png);lut(0, ((cch2-cch1)/((cch2+cch1) == 0 ? 0.000001 : (cch1+cch2))+1)/2, 0),lut(0, ((cch2-cch1)/((cch2+cch1) == 0 ? 0.000001 : (cch1+cch2))+1)/2, 1),lut(0, ((cch2-cch1)/((cch2+cch1) == 0 ? 0.000001 : (cch1+cch2))+1)/2, 2)",
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"image": {
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"geo_correct": true
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},
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"description": "descriptions/NDVI.md"
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},
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{
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"name": "NDWI",
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"expression": "cch2=(2, sun_angle_compensated_reflective_radiance, 0.000000, 97.050700);cch3a=(3, sun_angle_compensated_reflective_radiance, 0.000000, 5.416650);lut=lut(lut/NDWI.png);lut(0, 1-((cch2-cch3a)/((cch2+cch3a) == 0 ? 0.000001 : (cch3a+cch2))+1)/2, 0),lut(0, 1-((cch2-cch3a)/((cch2+cch3a) == 0 ? 0.000001 : (cch3a+cch2))+1)/2, 1),lut(0, 1-((cch2-cch3a)/((cch2+cch3a) == 0 ? 0.000001 : (cch3a+cch2))+1)/2, 2)",
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"image": {
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"geo_correct": true
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},
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"description": "descriptions/NDWI.md"
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}
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],
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"default": {
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@ -1,56 +0,0 @@
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-- NDVI
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function init()
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--create an empty image for the LUT
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img_lut = image_t.new()
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--load the LUT
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image_load_png(img_lut, get_resource_path("lut/NDVI.png"))
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--return 3 channels, RGB
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return 3
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end
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function process()
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for x = 0, rgb_output:width() - 1, 1 do
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for y = 0, rgb_output:height() - 1, 1 do
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--get channels from satdump.json
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get_channel_values(x, y)
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local cch1 = get_channel_value(0)
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local cch2 = get_channel_value(1)
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--perform NDVI
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local ndvi = (cch2-cch1)/(cch2+cch1)
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--range convert from -1 -> 1 to 0 -> 256
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local ndvi_lutval = (((ndvi-(-1))*256) / (1-(-1)))
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--sanity checks (noise)
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if ndvi_lutval < 0 then
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ndvi_lutval = 0
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end
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if ndvi_lutval > 255 then
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ndvi_lutval = 255
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end
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--don't forget to create a table!
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local lut_result = {}
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--send the ndvi_lutval to the LUT, retrieve it back in the table as 3 R,G,B channels
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lut_result[0] = img_lut:get(0 * img_lut:height() * img_lut:width() + ndvi_lutval * img_lut:width() + ndvi_lutval) / 255.0
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lut_result[1] = img_lut:get(1 * img_lut:height() * img_lut:width() + ndvi_lutval * img_lut:width() + ndvi_lutval) / 255.0
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lut_result[2] = img_lut:get(2 * img_lut:height() * img_lut:width() + ndvi_lutval * img_lut:width() + ndvi_lutval) / 255.0
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--return RGB 0=R 1=G 2=B
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set_img_out(0, x, y, lut_result[0])
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set_img_out(1, x, y, lut_result[1])
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set_img_out(2, x, y, lut_result[2])
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end
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--set the progress bar accordingly
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set_progress(x, rgb_output:width())
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end
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end
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@ -1,54 +0,0 @@
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-- NDWI
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function init()
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--create an empty image for the LUT
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img_lut = image_t.new()
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--load the LUT
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image_load_png(img_lut, get_resource_path("lut/NDWI.png"), false)
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--return 3 channels, RGB
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return 3
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end
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function process()
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for x = 0, rgb_output:width() - 1, 1 do
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for y = 0, rgb_output:height() - 1, 1 do
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--get channels from satdump.json
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get_channel_values(x, y)
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local cch2 = get_channel_value(0)
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local cch3a = get_channel_value(1)
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--perform NDWI
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local ndwi = (cch2-cch3a)/(cch2+cch3a)
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--range convert from -1 -> 1 to 0 -> 256
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local ndwi_lutval = (((ndwi-(-1))*256) / (1-(-1)))
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--sanity checks (noise)
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if ndwi_lutval < 0 then
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ndwi_lutval = 0
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end
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if ndwi_lutval > 255 then
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ndwi_lutval = 255
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end
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--don't forget to create a table!
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local lut_result = {}
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--send the ndwi_lutval to the LUT, retrieve it back in the table as 3 R,G,B channels
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lut_result[0] = img_lut:get(0 * img_lut:height() * img_lut:width() + ndwi_lutval * img_lut:width() + ndwi_lutval) / 255.0
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lut_result[1] = img_lut:get(1 * img_lut:height() * img_lut:width() + ndwi_lutval * img_lut:width() + ndwi_lutval) / 255.0
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lut_result[2] = img_lut:get(2 * img_lut:height() * img_lut:width() + ndwi_lutval * img_lut:width() + ndwi_lutval) / 255.0
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--return RGB 0=R 1=G 2=B
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set_img_out(0, x, y, lut_result[0])
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set_img_out(1, x, y, lut_result[1])
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set_img_out(2, x, y, lut_result[2])
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end
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--set the progress bar accordingly
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set_progress(x, rgb_output:width())
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end
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end
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