Revision: 70132
http://sourceforge.net/p/brlcad/code/70132
Author: starseeker
Date: 2017-08-25 21:11:09 +0000 (Fri, 25 Aug 2017)
Log Message:
-----------
Getting closer. For some reason GTiff works better than MEM as an intermediate
for the projection, but with the gdal_translate steps added the hawaii example
looks closer to the expected results.
Modified Paths:
--------------
brlcad/trunk/src/libgcv/plugins/gdal/gdal.cpp
Modified: brlcad/trunk/src/libgcv/plugins/gdal/gdal.cpp
===================================================================
--- brlcad/trunk/src/libgcv/plugins/gdal/gdal.cpp 2017-08-25 15:56:53 UTC
(rev 70131)
+++ brlcad/trunk/src/libgcv/plugins/gdal/gdal.cpp 2017-08-25 21:11:09 UTC
(rev 70132)
@@ -49,6 +49,7 @@
#include <cpl_string.h>
#include <cpl_multiproc.h>
#include <ogr_spatialref.h>
+#include "vrtdataset.h"
#include "raytrace.h"
#include "gcv/api.h"
@@ -250,7 +251,7 @@
GDALAllRegister();
- state->hDataset = GDALOpenEx(source_path, GDAL_OF_READONLY |
GDAL_OF_RASTER | GDAL_OF_VERBOSE_ERROR, NULL, NULL, NULL);
+ state->hDataset = GDALOpenEx(source_path, GDAL_OF_READONLY |
GDAL_OF_VERBOSE_ERROR, NULL, NULL, NULL);
if (!state->hDataset) {
bu_log("GDAL Reader: error opening input file %s\n", source_path);
BU_PUT(state, struct conversion_state);
@@ -278,7 +279,7 @@
GDALDestroyGenImgProjTransformer(hTsfA);
if (eErr != CE_None) return 0;
- GDALDatasetH pjdata = GDALCreate(GDALGetDriverByName("MEM"), "", nPixels,
nLines, GDALGetRasterCount(state->hDataset),
+ GDALDatasetH pjdata = GDALCreate(GDALGetDriverByName("GTiff"),
"test_out.tiff", nPixels, nLines, GDALGetRasterCount(state->hDataset),
GDALGetRasterDataType(GDALGetRasterBand(state->hDataset,1)), NULL);
if (pjdata == NULL) return 0;
GDALSetProjection(pjdata, dst_Wkt);
@@ -310,16 +311,57 @@
//GDALDatasetH indata = state->hDataset;
unsigned int xsize = GDALGetRasterXSize(indata);
unsigned int ysize = GDALGetRasterYSize(indata);
+#endif
+
+
+ double adfGeoTransform[6];
+ VRTDataset *poVDS = (VRTDataset *)VRTCreate(GDALGetRasterXSize(indata),
GDALGetRasterYSize(indata));
+ poVDS->SetProjection(GDALGetProjectionRef(indata));
+ GDALGetGeoTransform(indata, adfGeoTransform);
+ poVDS->SetGeoTransform(adfGeoTransform);
+ double adfWin[4];
+ adfWin[0] = 0;
+ adfWin[1] = 0;
+ adfWin[2] = xsize;
+ adfWin[3] = ysize;
+ /* psOptions->adfSrcWin */
+ GDALRasterBand *poSrcBand = ((GDALDataset *)indata)->GetRasterBand(1);
+ poVDS->AddBand(GDALGetRasterDataType(poSrcBand), NULL);
+ VRTSourcedRasterBand *poVRTBand = (VRTSourcedRasterBand
*)poVDS->GetRasterBand(1);
+ double dfScale=1.0, dfOffset=0.0;
+ double dfScaleSrcMin = 0.0, dfScaleSrcMax = 0.0;
+ double dfScaleDstMin = 0.0, dfScaleDstMax = 255.999;
+ double adfCMinMax[2];
+ GDALComputeRasterMinMax(poSrcBand, TRUE, adfCMinMax);
+ dfScaleSrcMin = adfCMinMax[0];
+ dfScaleSrcMax = adfCMinMax[1];
+ dfScale = (dfScaleDstMax - dfScaleDstMin) / (dfScaleSrcMax -
dfScaleSrcMin);
+ dfOffset = -1 * dfScaleSrcMin * dfScale + dfScaleDstMin;
+ VRTSimpleSource* poSimpleSource;
+ VRTComplexSource* poSource = new VRTComplexSource();
+ poSource->SetLinearScaling(dfOffset, dfScale);
+ poSimpleSource = poSource;
+ poSimpleSource->SetResampling(NULL);
+ poVRTBand->ConfigureSource( poSimpleSource, poSrcBand, FALSE, adfWin[0],
adfWin[1], adfWin[2], adfWin[3], adfWin[0], adfWin[1], adfWin[2], adfWin[3]);
+ poVRTBand->AddSource(poSimpleSource);
+ GDALDatasetH hOutDS = GDALCreateCopy(GDALGetDriverByName("MEM"), "",
(GDALDatasetH) poVDS, 0, NULL, GDALTermProgress, NULL);
+ GDALClose((GDALDatasetH)poVDS);
+
+ indata = hOutDS;
+
+#if 1
unsigned short *uint16_array = (unsigned short *)bu_calloc(xsize*ysize,
sizeof(unsigned short), "unsigned short array");
GDALRasterBandH band = GDALGetRasterBand(indata, 1);
- int bmin, bmax;
- double adfMinMax[2];
- adfMinMax[0] = GDALGetRasterMinimum(band, &bmin);
- adfMinMax[1] = GDALGetRasterMaximum(band, &bmax);
- if (!(bmin && bmax)) GDALComputeRasterMinMax(band, TRUE, adfMinMax);
- bu_log("Min/Max: %f, %f\n", adfMinMax[0], adfMinMax[1]);
+ /*
+ int bmin, bmax;
+ double adfMinMax[2];
+ adfMinMax[0] = GDALGetRasterMinimum(band, &bmin);
+ adfMinMax[1] = GDALGetRasterMaximum(band, &bmax);
+ if (!(bmin && bmax)) GDALComputeRasterMinMax(band, TRUE, adfMinMax);
+ bu_log("Min/Max: %f, %f\n", adfMinMax[0], adfMinMax[1]);
+ */
/* If we're going to DSP we need the unsigned short read. */
uint16_t *scanline = (uint16_t
*)CPLMalloc(sizeof(uint16_t)*GDALGetRasterBandXSize(band));
@@ -330,7 +372,7 @@
/* This is the critical assignment point - if we get this
* indexing wrong, data will not look right in dsp */
uint16_array[ysize*i+j] = scanline[j];
- bu_log("%d, %d: %d\n", i, j, scanline[j]);
+ //bu_log("%d, %d: %d\n", i, j, scanline[j]);
}
}
}
@@ -367,7 +409,7 @@
dsp->dsp_datasrc = RT_DSP_SRC_OBJ;
dsp->dsp_xcnt = ysize;
dsp->dsp_ycnt = xsize;
- dsp->dsp_smooth = 0;
+ dsp->dsp_smooth = 1;
dsp->dsp_cuttype = DSP_CUT_DIR_ADAPT;
MAT_IDN(dsp->dsp_stom);
dsp->dsp_stom[0] = dsp->dsp_stom[5] = 1000;
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