Oldal 149 [149]
OCR
cn A B 7 (b) As above but some alteration in the position of the standards has occurred in the VIS vs. the IRR and/or UVR images; (c) Where the images used for calibration are not the same images to be calibrated, either because it is a “twin” image not containing the standards (as in Figure 3-49) or another frame taken with the same camera and lighting conditions. This may be the situation if carrying out work in the field where site constraints may not allow the standards to be easily included in the frame or if batch processing a number of different frames taken with the same camera and under the same lighting conditions. 0 *F:\Technical Imaging\John Cupitt\zip files\bm2\bm-workspaces2.ws - align Elle Edit View Toolkits Help input linear | markup | viscalb | uvicalbj / align |fpecde Y D- match IR to vis % oy E- match uv to vis % Í v A- match UV-induced visible luminescence to vis falsecolour uvistray uvkm vilstray | vilkm results 3/023 | viecal.H10 2 {e7 | inear.x2 [a1 ) ucalb.B6 <> v ap2 [Mark on EBireference at (2264, 2362) SL, a2 |nakon areerence a 264 2: ap2 |Markon D26.reference at (2264, 23827 bp | Mark on EB.adjust at (2051, 1498) Sl, tpt |Markon cds at (2068, 899) , bp |Marken D26-adjust at (2050, 1486) bp2 | marion EBradjust at (2308, 2401) fal bp2 | mark on Azadi at (3160) 1490.) bp2 | mark on B26 adjust at (2270, 2360)! 0 test_alignment 2) test alignment | test_alignment Match. default 026 D23.targets E7.targets Match, default 026 D23.targets Al. targets Match 023.targets 024.targets 58 ap MerkonD26 reference at (2046, 1492) DOP CPE ED EDES Ma Un WP ee Oe —_———————— ES ee ID] Bsrat| 6 o [GJ inoox- 0... | i] chapter... | (P) iRRUVREC... | HE unsaved... [dd *F-ATechn... WH O26.eFere...| { Seaich Desitop (OB OWO S & 1254 Figure 3-45 11) The alignment is carried out by selecting a pair of points in each image, the corresponding IRR or UVR images are rotated and scaled according to the position of these points in the corresponding images until these are aligned. Note that the VIS images in the “reference” thumbnails are automatically carried over from the “viscalib” tab. The IRR and UVR images in the “adjust” thumbnails are carried over from the “linear” tab. 12) To align the Spectralon diffuse reflectance standards in the VIS and IRR images, double left-click on the D26 “reference” thumbnail to bring up the image view window containing the VIS image and two points, D26.ap1 and D26.ap2 (Figure 3-46). Zoom in or out of the image as necessary by pressing “+” or “-” (or “i” or “o”), respectively. Note that the image will update in real time, which may cause a slight response delay in larger images. 13) The points are moved by left-clicking and dragging on the label. Move these to indicate a pair of features on the standards which are recognisable in both images. Better accuracy is achieved if these points as far apart as possible. Note that it is not essential Version No. 1.0 141 Date : 14/10/2013
