Francesco, They are black & white images.
Are you suggesting doing some processing with GDAL first or use some directives in the map file to improve image quality? Thanks Jerry >Jerry , your color table looks like it is of a black and white image >(255,255,255,255 is white, 0,0,0,255 is black) looks very strange to me. >Your problem could also be that you use 8-bit color images, you could >try to use RGB images which help when having to resample the tiles >(which is what shp2img does when it draws your image) >Cheers, >Francesco Pirotti > >Jerry O'Sullivan ha scritto: >> Hi, >> >> Can anyone give me a few tips on producing better quality images from my >> raster maps. I chopped it up using maptiler - http://www.maptiler.org - and >> the image quality is top notch. When I use MapServer shp2img the quality >> isn't as good. I looked at the images in IfranView and the MapTiler image >> has a lot more unique colors >> >> Here is the gdalinfo for one of the tiles >> >> Image Structure Metadata: >> COMPRESSION=LZW >> INTERLEAVE=BAND >> Corner Coordinates: >> Upper Left ( 316000.000, 271000.000) ( 6d14'39.88"W, 53d40'33.00"N) >> Lower Left ( 316000.000, 268000.000) ( 6d14'43.91"W, 53d38'56.00"N) >> Upper Right ( 320000.000, 271000.000) ( 6d11'2.06"W, 53d40'29.75"N) >> Lower Right ( 320000.000, 268000.000) ( 6d11'6.23"W, 53d38'52.75"N) >> Center ( 318000.000, 269500.000) ( 6d12'53.02"W, 53d39'42.89"N) >> Band 1 Block=20000x1 Type=Byte, ColorInterp=Palette >> Color Table (RGB with 256 entries) >> 0: 255,255,255,255 >> 1: 0,0,0,255 >> 2: 0,0,0,255 >> 3: 0,0,0,255 >> 4: 0,0,0,255 >> 5: 0,0,0,255 >> 6: 0,0,0,255 >> 7: 0,0,0,255 >> 8: 0,0,0,255 >> 9: 0,0,0,255 >> 10: 0,0,0,255 >> 11: 0,0,0,255 >> 12: 0,0,0,255 >> 13: 0,0,0,255 >> 14: 0,0,0,255 >> 15: 0,0,0,255 >> 16: 0,0,0,255 >> 17: 0,0,0,255 >> 18: 0,0,0,255 >> 19: 0,0,0,255 >> 20: 0,0,0,255 >> 21: 0,0,0,255 >> 22: 0,0,0,255 >> 23: 0,0,0,255 >> 24: 0,0,0,255 >> 25: 0,0,0,255 >> 26: 0,0,0,255 >> 27: 0,0,0,255 >> 28: 0,0,0,255 >> 29: 0,0,0,255 >> 30: 0,0,0,255 >> 31: 0,0,0,255 >> 32: 0,0,0,255 >> 33: 0,0,0,255 >> 34: 0,0,0,255 >> 35: 0,0,0,255 >> 36: 0,0,0,255 >> 37: 0,0,0,255 >> 38: 0,0,0,255 >> 39: 0,0,0,255 >> 40: 0,0,0,255 >> 41: 0,0,0,255 >> 42: 0,0,0,255 >> 43: 0,0,0,255 >> 44: 0,0,0,255 >> 45: 0,0,0,255 >> 46: 0,0,0,255 >> 47: 0,0,0,255 >> 48: 0,0,0,255 >> 49: 0,0,0,255 >> 50: 0,0,0,255 >> 51: 0,0,0,255 >> 52: 0,0,0,255 >> 53: 0,0,0,255 >> 54: 0,0,0,255 >> 55: 0,0,0,255 >> 56: 0,0,0,255 >> 57: 0,0,0,255 >> 58: 0,0,0,255 >> 59: 0,0,0,255 >> 60: 0,0,0,255 >> 61: 0,0,0,255 >> 62: 0,0,0,255 >> 63: 0,0,0,255 >> 64: 0,0,0,255 >> 65: 0,0,0,255 >> 66: 0,0,0,255 >> 67: 0,0,0,255 >> 68: 0,0,0,255 >> 69: 0,0,0,255 >> 70: 0,0,0,255 >> 71: 0,0,0,255 >> 72: 0,0,0,255 >> 73: 0,0,0,255 >> 74: 0,0,0,255 >> 75: 0,0,0,255 >> 76: 0,0,0,255 >> 77: 0,0,0,255 >> 78: 0,0,0,255 >> 79: 0,0,0,255 >> 80: 0,0,0,255 >> 81: 0,0,0,255 >> 82: 0,0,0,255 >> 83: 0,0,0,255 >> 84: 0,0,0,255 >> 85: 0,0,0,255 >> 86: 0,0,0,255 >> 87: 0,0,0,255 >> 88: 0,0,0,255 >> 89: 0,0,0,255 >> 90: 0,0,0,255 >> 91: 0,0,0,255 >> 92: 0,0,0,255 >> 93: 0,0,0,255 >> 94: 0,0,0,255 >> 95: 0,0,0,255 >> 96: 0,0,0,255 >> 97: 0,0,0,255 >> 98: 0,0,0,255 >> 99: 0,0,0,255 >> 100: 0,0,0,255 >> 101: 0,0,0,255 >> 102: 0,0,0,255 >> 103: 0,0,0,255 >> 104: 0,0,0,255 >> 105: 0,0,0,255 >> 106: 0,0,0,255 >> 107: 0,0,0,255 >> 108: 0,0,0,255 >> 109: 0,0,0,255 >> 110: 0,0,0,255 >> 111: 0,0,0,255 >> 112: 0,0,0,255 >> 113: 0,0,0,255 >> 114: 0,0,0,255 >> 115: 0,0,0,255 >> 116: 0,0,0,255 >> 117: 0,0,0,255 >> 118: 0,0,0,255 >> 119: 0,0,0,255 >> 120: 0,0,0,255 >> 121: 0,0,0,255 >> 122: 0,0,0,255 >> 123: 0,0,0,255 >> 124: 0,0,0,255 >> 125: 0,0,0,255 >> 126: 0,0,0,255 >> 127: 0,0,0,255 >> 128: 0,0,0,255 >> 129: 0,0,0,255 >> 130: 0,0,0,255 >> 131: 0,0,0,255 >> 132: 0,0,0,255 >> 133: 0,0,0,255 >> 134: 0,0,0,255 >> 135: 0,0,0,255 >> 136: 0,0,0,255 >> 137: 0,0,0,255 >> 138: 0,0,0,255 >> 139: 0,0,0,255 >> 140: 0,0,0,255 >> 141: 0,0,0,255 >> 142: 0,0,0,255 >> 143: 0,0,0,255 >> 144: 0,0,0,255 >> 145: 0,0,0,255 >> 146: 0,0,0,255 >> 147: 0,0,0,255 >> 148: 0,0,0,255 >> 149: 0,0,0,255 >> 150: 0,0,0,255 >> 151: 0,0,0,255 >> 152: 0,0,0,255 >> 153: 0,0,0,255 >> 154: 0,0,0,255 >> 155: 0,0,0,255 >> 156: 0,0,0,255 >> 157: 0,0,0,255 >> 158: 0,0,0,255 >> 159: 0,0,0,255 >> 160: 0,0,0,255 >> 161: 0,0,0,255 >> 162: 0,0,0,255 >> 163: 0,0,0,255 >> 164: 0,0,0,255 >> 165: 0,0,0,255 >> 166: 0,0,0,255 >> 167: 0,0,0,255 >> 168: 0,0,0,255 >> 169: 0,0,0,255 >> 170: 0,0,0,255 >> 171: 0,0,0,255 >> 172: 0,0,0,255 >> 173: 0,0,0,255 >> 174: 0,0,0,255 >> 175: 0,0,0,255 >> 176: 0,0,0,255 >> 177: 0,0,0,255 >> 178: 0,0,0,255 >> 179: 0,0,0,255 >> 180: 0,0,0,255 >> 181: 0,0,0,255 >> 182: 0,0,0,255 >> 183: 0,0,0,255 >> 184: 0,0,0,255 >> 185: 0,0,0,255 >> 186: 0,0,0,255 >> 187: 0,0,0,255 >> 188: 0,0,0,255 >> 189: 0,0,0,255 >> 190: 0,0,0,255 >> 191: 0,0,0,255 >> 192: 0,0,0,255 >> 193: 0,0,0,255 >> 194: 0,0,0,255 >> 195: 0,0,0,255 >> 196: 0,0,0,255 >> 197: 0,0,0,255 >> 198: 0,0,0,255 >> 199: 0,0,0,255 >> 200: 0,0,0,255 >> 201: 0,0,0,255 >> 202: 0,0,0,255 >> 203: 0,0,0,255 >> 204: 0,0,0,255 >> 205: 0,0,0,255 >> 206: 0,0,0,255 >> 207: 0,0,0,255 >> 208: 0,0,0,255 >> 209: 0,0,0,255 >> 210: 0,0,0,255 >> 211: 0,0,0,255 >> 212: 0,0,0,255 >> 213: 0,0,0,255 >> 214: 0,0,0,255 >> 215: 0,0,0,255 >> 216: 0,0,0,255 >> 217: 0,0,0,255 >> 218: 0,0,0,255 >> 219: 0,0,0,255 >> 220: 0,0,0,255 >> 221: 0,0,0,255 >> 222: 0,0,0,255 >> 223: 0,0,0,255 >> 224: 0,0,0,255 >> 225: 0,0,0,255 >> 226: 0,0,0,255 >> 227: 0,0,0,255 >> 228: 0,0,0,255 >> 229: 0,0,0,255 >> 230: 0,0,0,255 >> 231: 0,0,0,255 >> 232: 0,0,0,255 >> 233: 0,0,0,255 >> 234: 0,0,0,255 >> 235: 0,0,0,255 >> 236: 0,0,0,255 >> 237: 0,0,0,255 >> 238: 0,0,0,255 >> 239: 0,0,0,255 >> 240: 0,0,0,255 >> 241: 0,0,0,255 >> 242: 0,0,0,255 >> 243: 0,0,0,255 >> 244: 0,0,0,255 >> 245: 0,0,0,255 >> 246: 0,0,0,255 >> 247: 0,0,0,255 >> 248: 0,0,0,255 >> 249: 0,0,0,255 >> 250: 0,0,0,255 >> 251: 0,0,0,255 >> 252: 0,0,0,255 >> 253: 0,0,0,255 >> 254: 0,0,0,255 >> 255: 0,0,0,255 >> >> Thanks, >> Jerry >> _______________________________________________ >> mapserver-users mailing list >> mapserver-users@lists.osgeo.org >> http://lists.osgeo.org/mailman/listinfo/mapserver-users >> >> >> > > >-- >*Francesco Pirotti* >Dep. TESAF >CIRGEO – Interdepartmental Research Center on Cartography Photogrammetry >Remote Sensing and G.I.S. >University of Padova >Web: http://www.cirgeo.unipd.it/cirgeo/francescopirotti.htm >Email: francesco.piro...@unipd.it >Phone: +39 049 827 2710 >Phone: +39 349 55 39 261 > > > _______________________________________________ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users