Commit faef771897b9f16f46b31422f0a727e4196602f4
1 parent
2ed641f0
updates to stim::image allow acquiring sparse image data
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3 changed files
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64 additions
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5 deletions
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stim/image/image.h
@@ -66,7 +66,7 @@ public: | @@ -66,7 +66,7 @@ public: | ||
66 | void data_interleaved(T* data){ | 66 | void data_interleaved(T* data){ |
67 | 67 | ||
68 | unsigned int C = channels(); | 68 | unsigned int C = channels(); |
69 | - unsigned int X = size(); | 69 | + unsigned int X = width() * height(); |
70 | 70 | ||
71 | T* ptr = img.data(); | 71 | T* ptr = img.data(); |
72 | 72 | ||
@@ -105,6 +105,55 @@ public: | @@ -105,6 +105,55 @@ public: | ||
105 | return img.size(); | 105 | return img.size(); |
106 | } | 106 | } |
107 | 107 | ||
108 | + /// Returns the number of nonzero values | ||
109 | + unsigned int nnz(){ | ||
110 | + | ||
111 | + unsigned long P = width() * height(); | ||
112 | + unsigned long C = channels(); | ||
113 | + | ||
114 | + T* ptr = img.data(); | ||
115 | + | ||
116 | + unsigned long n = 0; | ||
117 | + | ||
118 | + for(unsigned long p = 0; p < P; p++){ | ||
119 | + for(unsigned long c = 0; c < C; c++){ | ||
120 | + | ||
121 | + if(ptr[c * P + p] > 0){ | ||
122 | + n++; | ||
123 | + break; | ||
124 | + } | ||
125 | + } | ||
126 | + } | ||
127 | + | ||
128 | + return n; //return the number of nonzero pixels | ||
129 | + | ||
130 | + } | ||
131 | + | ||
132 | + //this function returns indices of pixels that have nonzero values | ||
133 | + std::vector<unsigned long> sparse_idx(){ | ||
134 | + | ||
135 | + std::vector<unsigned long> s; //allocate an array | ||
136 | + s.resize(nnz()); //allocate space in the array | ||
137 | + | ||
138 | + unsigned long P = width() * height(); | ||
139 | + unsigned long C = channels(); | ||
140 | + | ||
141 | + T* ptr = img.data(); //get a pointer to the image data | ||
142 | + | ||
143 | + unsigned long i = 0; | ||
144 | + for(unsigned long p = 0; p < P; p++){ | ||
145 | + for(unsigned long c = 0; c < C; c++){ | ||
146 | + | ||
147 | + if(ptr[c * P + p] > 0){ | ||
148 | + s[i] = p; | ||
149 | + i++; | ||
150 | + break; | ||
151 | + } | ||
152 | + } | ||
153 | + } | ||
154 | + | ||
155 | + return s; //return the index list | ||
156 | + } | ||
108 | 157 | ||
109 | 158 | ||
110 | 159 |
stim/math/vector.h
@@ -54,6 +54,16 @@ struct vec : public std::vector<T> | @@ -54,6 +54,16 @@ struct vec : public std::vector<T> | ||
54 | at(3) = w; | 54 | at(3) = w; |
55 | } | 55 | } |
56 | 56 | ||
57 | + vec(std::string str){ | ||
58 | + std::stringstream ss(str); | ||
59 | + | ||
60 | + T c; | ||
61 | + while(ss >> c){ | ||
62 | + push_back(c); | ||
63 | + } | ||
64 | + | ||
65 | + } | ||
66 | + | ||
57 | 67 | ||
58 | 68 | ||
59 | //copy constructor | 69 | //copy constructor |
stim/parser/filename.h
@@ -20,7 +20,7 @@ | @@ -20,7 +20,7 @@ | ||
20 | 20 | ||
21 | #include "../parser/parser.h" | 21 | #include "../parser/parser.h" |
22 | 22 | ||
23 | -#include <boost/filesystem.hpp> | 23 | +//#include <boost/filesystem.hpp> |
24 | 24 | ||
25 | namespace stim{ | 25 | namespace stim{ |
26 | 26 | ||
@@ -154,8 +154,8 @@ public: | @@ -154,8 +154,8 @@ public: | ||
154 | 154 | ||
155 | return ss.str(); | 155 | return ss.str(); |
156 | } | 156 | } |
157 | - | ||
158 | - //get a list of files matching the current tamplate | 157 | +/* |
158 | + //get a list of files matching the current template | ||
159 | std::vector<stim::filename> get_list(){ | 159 | std::vector<stim::filename> get_list(){ |
160 | 160 | ||
161 | boost::filesystem::path p(dir()); //create a path from the current filename | 161 | boost::filesystem::path p(dir()); //create a path from the current filename |
@@ -193,7 +193,7 @@ public: | @@ -193,7 +193,7 @@ public: | ||
193 | 193 | ||
194 | return file_list; | 194 | return file_list; |
195 | } | 195 | } |
196 | - | 196 | +*/ |
197 | //gets the current working directory | 197 | //gets the current working directory |
198 | static stim::filename cwd(){ | 198 | static stim::filename cwd(){ |
199 | 199 |