Changeset: 3f3cc46a3c37 for MonetDB
URL: http://dev.monetdb.org/hg/MonetDB?cmd=changeset;node=3f3cc46a3c37
Modified Files:
sql/test/sciql/Tests/teleios_noa_bsm.sql
Branch: sciql
Log Message:
Some corrections based on Dimitrios' info.
- each band is stored as separate image
- definition of 4-connected or 8-connected pixels, implemented by two UDFs.
diffs (144 lines):
diff --git a/sql/test/sciql/Tests/teleios_noa_bsm.sql
b/sql/test/sciql/Tests/teleios_noa_bsm.sql
--- a/sql/test/sciql/Tests/teleios_noa_bsm.sql
+++ b/sql/test/sciql/Tests/teleios_noa_bsm.sql
@@ -1,14 +1,31 @@
DECLARE size_x INT, size_y INT;
SET size_x = $img_len;
SET size_y = $img_hei;
--- BSM classification one image
+-- Import the TIFF images
+-- the b3, b4 and b7 of the 1st image as rs.image1, rs.image2 and rs.image3
+-- the b3, b4 and b7 of the 2nd image as rs.image4, rs.image5 and rs.image6
+-- Then, put the three bands of each image into one array:
+CREATE ARRAY landsat5_img1 (x INT DIMENSION[size_x], y INT DIMENSION[size_y],
b3 INT, b4 INT, b7 INT);
+CREATE ARRAY landsat5_img2 (x INT DIMENSION[size_x], y INT DIMENSION[size_y],
b3 INT, b4 INT, b7 INT);
+INSERT INTO landsat5_img1 (
+ SELECT img1.x, img1.y, img1.intensity AS b3,
+ img2.intensity AS b4, img3.intensity AS b7
+ FROM rs.image1 AS img1, rs.image2 AS img2, rs.image3 AS img3
+ WHERE img1.x = img2.x AND img1.x = img3.x
+ AND img1.y = img2.y AND img1.y = img3.y);
+INSERT INTO landsat5_img2 (
+ SELECT img4.x, img4.y, img4.intensity AS b3,
+ img5.intensity AS b4, img6.intensity AS b7
+ FROM rs.image4 AS img4, rs.image5 AS img5, rs.image6 AS img6
+ WHERE img4.x = img5.x AND img4.x = img6.x
+ AND img4.y = img5.y AND img4.y = img6.y);
+
+-- BSM classification (landsatFirePredicate()) using one image
CREATE ARRAY fire1 (x INT DIMENSION[size_x], y INT DIMENSION[size_y], f INT
DEFAULT 0);
-CREATE ARRAY landsat5 (x INT DIMENSION[size_x], y INT DIMENSION[size_y], b3
INT, b4 INT, b7 INT);
----- import image into langsat5
INSERT INTO fire1 (
SELECT x, y, 1
- FROM landsat5
+ FROM landsat5_img1
WHERE b3 <> 0 AND b4 <> 0 AND b7 <> 0
AND b4 <= 60 -- indexNIR
AND FLOOR(CAST(b3+b4 AS DOUBLE)/2.0) <= 50.0 -- indexALBEDO
@@ -16,15 +33,11 @@ INSERT INTO fire1 (
AND (CAST(b4-b7 AS DOUBLE)/(b4 + b7) + 1.0) * 127.0 <= 126.0 -- indexNBR,
255.0/2.0=127.0
);
--- BSM classification two images
-
+-- BSM classification (landsatFirePredicate()) using two images
CREATE ARRAY fire2 (x INT DIMENSION[size_x], y INT DIMENSION[size_y], f INT
DEFAULT 0);
-CREATE ARRAY img1 (x INT DIMENSION[size_x], y INT DIMENSION[size_y], b3 INT,
b4 INT, b7 INT);
-CREATE ARRAY img2 (x INT DIMENSION[size_x], y INT DIMENSION[size_y], b3 INT,
b4 INT, b7 INT);
----- import image into img1 and img2
INSERT INTO fire2 (
SELECT img1.x, img1.y, 1
- FROM img1, img2
+ FROM landsat5_img1 AS img1, landsat5_img2 AS img2
WHERE img1.b3 <> 0 AND img1.b4 <> 0 AND img1.b7 <> 0
AND img1.b4 <= 60 -- indexNIR_img1
AND FLOOR(CAST(img1.b3+img1.b4 AS DOUBLE)/2.0) <= 50.0 -- indexALBEDO_img1
@@ -36,9 +49,12 @@ INSERT INTO fire2 (
AND img1.x = img2.x AND img1.y = img2.y
);
+-- BSM cloud-water mask filter
+---- TODO
+
-- BSM majority filter
DECLARE half_wsize INT;
-SET half_wsize = 3/2; -- using a 3x3 window
+SET half_wsize = $WINDOW_SIZE/2; -- using a 3x3 or 5x5 window
CREATE ARRAY fire_marjority (x INT DIMENSION[size_x], y INT DIMENSION[size_y],
f INT DEFAULT 0);
CREATE VIEW neighbours AS
@@ -57,7 +73,42 @@ INSERT INTO fire_majority (
-- BSM clump&eliminate filter
CREATE ARRAY fire_eliminated (x INT DIMENSION[size_x], y INT
DIMENSION[size_y], gid INT);
-CREATE PROCEDURE count_groups()
+---- Use 4-connected, i.e., each pixel has 4 neighboring pixels,
+---- namely North, East, South, West.
+CREATE PROCEDURE count_groups_4connected()
+BEGIN
+ DECLARE moreupdates INT;
+ SET moreupdates = 1;
+
+ INSERT INTO fire_eliminated (
+ SELECT x, y, x * size_y + y FROM fire_majority
+ WHERE v = 1);
+
+ WHILE moreupdates > 0 DO
+ INSERT INTO fire_eliminated (
+ SELECT [x], [y], MAX(gid) FROM fire_eliminated AS fe
+ GROUP BY fe[x][y], fe[x+1][y], fe[x][y+1], fe[x-1][y], fe[x][y-1]);
+
+ SELECT SUM(res) INTO moreupdates
+ FROM (
+ SELECT MAX(gid) - MIN(gid) AS res
+ FROM fire_eliminated
+ GROUP BY fe[x][y], fe[x+1][y], fe[x][y+1], fe[x-1][y],
fe[x][y-1]
+ ) AS updates;
+ END WHILE;
+
+---- Eliminate any groups that have few members (<10 pixels)
+ CREATE TABLE to_eliminate (gid INT) AS
+ SELECT gid FROM fire_eliminated
+ WHERE gid > 0
+ GROUP BY gid HAVING COUNT(gid) < 10;
+
+ UPDATE fire_eliminated SET gid = NULL WHERE gid IN (SELECT * FROM
to_eliminate);
+END;
+
+---- Use 8-connected, i.e., each pixel has 8 neighbors,
+---- namely N, NE, E, SE, S, SW, W, NW.
+CREATE PROCEDURE count_groups_8connected()
BEGIN
DECLARE moreupdates INT;
SET moreupdates = 1;
@@ -70,18 +121,17 @@ BEGIN
WHILE moreupdates > 0 DO
INSERT INTO fire_eliminated (
SELECT [x], [y], MAX(gid) FROM fire_eliminated
- GROUP BY fire_eliminated[x-1:x+2][y-1:y+2]
- HAVING gid IS NOT NULL);
+ GROUP BY fire_eliminated[x-1:x+2][y-1:y+2]);
SELECT SUM(res) INTO moreupdates
FROM (
SELECT MAX(gid) - MIN(gid) AS res
FROM fire_eliminated
GROUP BY fire_eliminated[x-1:x+2][y-1:y+2]
- HAVING gid IS NOT NULL
) AS updates;
END WHILE;
+---- Eliminate any groups that have few members (<10 pixels)
CREATE TABLE to_eliminate (gid INT) AS
SELECT gid FROM fire_eliminated
WHERE gid > 0
@@ -91,5 +141,7 @@ BEGIN
END;
-- BSM connect nearby fires filter
+---- Union fires which are less that 3 pixels apart (using 8- CONNECTED)
+---- Add fire bridge between them
-- TODO
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