Table 3 BAND 1: PEAK FREQUENCIES FoR HuMP-1 AND Hump-2
Related Figures (24)
Fig. 2. Process flow diagram for classifying the image using humps of histogram. Fig. 1. Sample four single band images of different spectral bands. This sample image is used for classification in this paper. diagram of my approach to classify the remotely sensec image. Two Humps: PEAK FREQUENCIES FoR BOTH THE HUMPS In this stage, the starting line of histogram is raised to find out the disjoint humps programmatically. Here, I use threshold frequency of 3000 to make humps disjoint. Here, in hump1, band 2 has peak frequency of 5587 for grey level value 57 and peak frequency of 13764 for grey level value 145. Now, while reading all the pixels of multispectral Fig. 5. Classified image using humps’ peaks’ grey level values as centroids (2 humps as 2 clusters) Fig. 6. Histogram for peaks of band-1 in different humps Now, I can draw another histogram for band-1 in different humps where band-1 grey level values are 87 (for hump-1) and 140 (for hump-2). TABLE V 4) Band-4 Humps Here, in hump1, band 3 has peak frequency of 4896 for grey level value 48 and peak frequency of 8000 for grey level value 187. Now, while reading all the pixels of multispectral image, I can see the values of other spectral bands on the same co- ordinate where spectral band 3 has grey level value of 48. Here band-3 frequency of 4896 is global frequency (found after reading whole image) while corresponding band-1, band- BAND 4: PEAK FREQUENCIES FoR HuMP-1 AND Hump-2 Here, in hump1, band 4 has peak frequency of 6922 for grey level value 29 and peak frequency of 9673 for grey level value 144. Now, while reading all the pixels of multispectral image, I can see the values of other spectral bands on the same co- Fig. 7. Histogram for peaks of band-2 in different humps Now, I can draw another histogram for band-2 in different humps where band 2 grey level values are 57 (for hump-1) and 145 (for hump-2). Fig. 8. Histogram for peaks of band-3 in different humps INCLUSION OF EXTREME LEFT AND EXTREME RIGHT D. Finding All the Centroids and Classifying Fig. 10. Classified image using 8 centroids of humps’ peaks. If classify the image using all these 8 centroids, the classified image look like Fig. 10. Two Humps: PEAK FREQUENCIES FOR BOTH HUMPS Fig. 12 shows the peak, extreme left and extreme right frequencies with black line in histogram. Table IX shows the list of extreme left and extreme right centroids of all the humps. In Table X Hump-1, Centroid {144, 150, 208, and 162} is duplicated. Similarly in Table XI Hump-2, Centroid {90, 60, 50, and 30} is triplicated. All the duplicated and triplicated centroids are eliminated and only one copy with highest sum of frequency is retained. Similarly average frequencies for all the bands in minor (1*) hump are 4614, 4468, 3910, and 5172 respectively, and average frequencies for all the bands in major (2"’) hump are 11664, 9473, 6397, and 7408 respectively. The average minor hump frequency is 4541 and average major hump frequency is 8735. Fig. 12. Histogram showing extreme left, peak, and extreme right band values’ frequencies in black line. Here width of minor humps are 7, 6, 6, and 5 respectively, while width of major humps are 28, 37, 59, and 51 respectively. Average width of minor (1") hump is 6, and average width of major (2"') hump is 44.
