21:20 -!- jtanx [
[email protected]] has quit ["ChatZilla 0.9.90.1 [Firefox 24.0/20130910160258]"]
+--- Day changed Sat Oct 26 2013
+15:10 < Callum> just finished the code to get the edge. atm it just returns the position on their object. was thinking we'd just use the timestamp and go this was the additional width at this time, additional width at time +1, so rate of change is 2*difference etc
+15:11 < Callum> also pushing 3 images to testing (actually i should go abck and push original too) but to show it blurred, after canny and with the found edge imposed over it (without w.e values i had set at the time..)
+15:15 < jtanx> Nice
+15:16 < Callum> ok merged
+15:17 < Callum> i might need some help merging this into the server code too
+15:18 < Callum> just to make sure its all good
+15:34 < jtanx> Sure
+15:34 < jtanx> I'm really busy right now though with this other crappy project that I have to do
+15:35 < jtanx> If not today, then maybe during tomorrow's meeting (if we're having a meeting then?)
+16:07 < Callum> we were meeting tomorrow? also i have an assignment due monday i havent started. was going to try and work through that and work on another project i have due..as well as this
+16:07 < Callum> still need to start my writeup for this.
+16:40 < Callum> also, if the image is completely black, the read function should return false (havent yet tested this but it should be the case)
+16:53 < Callum> also looking at justins diagram, why isnt the microscope not included?
+16:54 < Callum> or is it just both under "camera"
+17:01 < jtanx> Yeah
+17:01 < jtanx> I think it's just under "camera"
+17:02 < Callum> ok.
+17:02 < jtanx> I dunno, I thought we should try to meet some time next week
+17:02 < jtanx> monday's our usual meeting time
+17:02 < Callum> you said tomorrow though didnt you?
+17:03 < jtanx> Ohh
+17:03 < jtanx> sorry
+17:03 < jtanx> my bad
+17:03 < jtanx> I meant monday
+17:03 < Callum> was going to say, my body clock so out of wack its sunday already?
+17:03 < Callum> yea. if i can get the assignment done tomorrow il be happy to spend most oif the day trying to finish some of this off
+17:03 < jtanx> Haha mine is
+17:03 < Callum> to be fair, i normally work saturdays
+17:03 < Callum> i took it off to do work.
+17:04 < jtanx> :/
+17:04 < Callum> so it should feel like a sunday
+17:04 < jtanx> I had this assignment where I thought I had completed it, but when I reread the specs I found out that I missed a large portion of it
+17:05 < Callum> ouch
+17:05 < Callum> what assignment was this for?
+17:05 < jtanx> cits3242
+17:05 < jtanx> some programming unit
+17:05 < Callum> figured by the cits. :p
+17:05 < jtanx> hehe
+17:06 < jtanx> yeah, if it wasn't for that i'd be solely working on this project right now
+17:07 < Callum> yea iv kind of been working on 3 or 4 things all at once. and not gotten far in anything.
+17:07 < jtanx> yeah, it's always crap when things are due at the same time
+17:08 < jtanx> but 3-4 things at once? that's harsh
+17:12 < Callum> umm. assignment due tomorrow i havent started. i have anoither group project but we only really have 2 members and wev barely done anything (due friday, meant to have 4/5 members)
+17:12 < Callum> physics assignment also due on friday
+17:12 < Callum> just trying to figure out how to get it all done
+17:13 < Callum> not going to be a fun week. then after this weeks over its major catchup in the 3 units i have exams for
+17:13 < Callum> oh and this tute adrian decided to give us...should probably look at that some time too
+17:16 < Callum> whats the model for the microscope? cant find anything in dropbox
+17:22 < Callum> they are using the microscope only on the non-exploding one im assuming?
+17:23 < jtanx> Yeah
+17:23 < jtanx> the microscope
+17:23 < jtanx> it's a kaiser baas something
+17:23 < jtanx> KBA03030
+17:24 < Callum> thanks
+17:57 -!- Callum [
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--- /dev/null
+/**
+ * @file microscope.c
+ * @purpose Implementation of microscope related functions
+ */
+
+#include "cv.h"
+#include "highgui_c.h"
+#include "microscope.h"
+#include <math.h>
+
+// test positions
+static double test_left, test_right;
+
+// Canny Edge algorithm variables
+int lowThreshold = 30;
+int ratio = 3;
+int kernel_size = 3;
+
+/** Buffer for storing image data. Stored as a **/
+static CvMat * g_srcRGB = NULL; // Source Image
+static CvMat * g_srcGray = NULL; // Gray scale of source image
+static CvMat * g_edges = NULL; // Detected Edges
+static CvMat * g_data = NULL; // Image to mask edges onto
+
+
+/** Camera capture pointer **/
+static CvCapture * g_capture = NULL;
+
+/**
+ * Create a test image using left as left edge and right as right edge positions
+ */
+void Dilatometer_TestImage()
+{
+
+ g_srcRGB = cvCreateMat(480, 640, CV_8UC3);
+
+ for( int x = 0; x < 640; ++x)
+ {
+ for (int y = 0; y < 480; ++y)
+ {
+ CvScalar s;
+ for( int i = 0; i < 3; ++i)
+ {
+ s.val[i] = 210 + (rand() % 1000) * 1e-0 - (rand() % 1000) * 1e-0;
+ // Produce an exponential decay around left edge
+ if( x < test_left)
+ s.val[i] *= exp( (x - test_left) / 25);
+ else if( x < 320)
+ s.val[i] *= exp( (test_left - x) / 25);
+ // Produce an exponential decay around right edge
+ else if( x < test_right)
+ s.val[i] *= exp( (x - test_right) / 25);
+ else
+ s.val[i] *= exp( (test_right - x) / 25);
+ }
+ cvSet2D(g_srcRGB,y,x,s);
+ // if( s.val[0] > 200)
+ // printf("row: %d, col: %d, %f\n", y, x, s.val[0]);
+ }
+
+ }
+ if (g_data == NULL)
+ {
+ g_data = cvCreateMat(g_srcRGB->rows,g_srcRGB->cols,CV_8UC1); //IPL_DEPTH_8U?
+ }
+ cvCvtColor(g_srcRGB,g_data,CV_RGB2GRAY);
+}
+
+/**
+ * Initialise the dilatometer
+ */
+void Microscope_Init()
+{
+
+ // Make an initial reading (will allocate memory the first time only).
+ double val;
+ Microscope_Read(&val, 1);
+}
+
+/**
+ * Cleanup Interferometer stuff
+ */
+void Microscope_Cleanup()
+{
+ if (g_data != NULL)
+ cvReleaseMat(&g_data);
+
+ if (g_capture != NULL)
+ cvReleaseCapture(&g_capture);
+
+}
+
+/**
+ * Get an image from the Dilatometer
+ */
+static void Microscope_GetImage()
+{
+ //Need to implement camera
+}
+
+void CannyThreshold()
+{
+
+ if (g_data == NULL)
+ {
+ g_data = cvCreateMat(g_srcGray->rows,g_srcGray->cols,CV_8UC1);
+ }
+
+ if ( g_edges == NULL)
+ {
+ g_edges = cvCreateMat(g_srcGray->rows,g_srcGray->cols,CV_8UC1);
+ }
+
+ //g_data = 0;
+ cvShowImage("display", g_srcGray);
+ cvWaitKey(0);
+ // Reduce noise with a kernel 3x3. Input the grayscale source image, output to edges. (0's mean it's determined from kernel sizes)
+ cvSmooth( g_srcGray, g_edges, CV_GAUSSIAN, 9, 9 ,0 ,0 );
+
+ cvShowImage("display", g_edges);
+ cvWaitKey(0);
+
+ // Find the edges in the image
+ lowThreshold = 35;
+ cvCanny( g_edges, g_edges, lowThreshold, lowThreshold*ratio, kernel_size );
+
+ cvShowImage("display", g_edges);
+ cvWaitKey(0);
+
+ // Mask the edges over G_data
+ //.copyTo( g_data, g_edges);
+}
+
+// Test algorithm
+static void Microscope_GetImageTest( )
+{
+ //Generates Test image
+ //Dilatometer_TestImage();
+
+ //Load Test image
+ g_srcGray = cvLoadImageM ("testimage.jpg",CV_LOAD_IMAGE_GRAYSCALE );
+ CannyThreshold();
+}
+
+
+ /**
+ * Read the microscope image. The value changed will correspond to the new location of the edge.
+ * @param val - Will store the read value if successful
+ * @param samples - Number of rows to scan (increasing will slow down performance!)
+ * @returns true on successful read
+ */
+bool Microscope_Read( double * value, int samples)
+{
+ bool result = false;
+ double average = 0;
+ // Get the image from the camera
+ Microscope_GetImageTest();
+
+ int width = g_edges->cols;
+ int height = g_edges->rows;
+
+ // If the number of samples is greater than the image height, sample every row
+ if( samples > height)
+ {
+ samples = height;
+ }
+
+ int sample_height;
+ int num_edges = 0; // Number of edges. if each sample location has an edge, then num_edges = samples
+
+ for (int i=0; i<samples; i++)
+ {
+ // Determine the position in the rows to find the edges.
+ // This will give you a number of evenly spaced samples
+ sample_height = ceil(height * (i + 1) / samples) -1;
+
+ // Need to go through each pixel of a row and find all the locations of a line. If there is more than one pixel, average it. note this only works if the canny edge algorithm returns lines about the actual line (no outliers).
+
+ int edge_location=0;
+ int num=0;
+ for ( int col = 0; col < width; col++)
+ {
+ // Count the number of points
+ // Get the threshold of the pixel at the current location
+ CvScalar value = cvGet2D(g_edges, sample_height, col);
+ //printf("row: %d, col: %d, value: %f\n",sample_height, col, value.val[0]);
+ if( value.val[0]> THRES)
+ {
+ edge_location += col;
+ num++;
+ }
+ }
+ if( num > 0)
+ {
+ average += ( edge_location / num );
+ num_edges++;
+ printf("average %f\n", average/num_edges);
+ }
+ }
+ if (num_edges > 0)
+ average /= num_edges;
+
+ if( average > 0)
+ {
+ result = true; //Successfully found an edge
+ *value = average;
+ }
+ return result;
+}
+
+// Overlays a line over the given edge position
+void Draw_Edge(double edge)
+{
+ CvScalar value;
+ value.val[0]=244;
+ for( int i = 0; i < g_srcGray->rows; i++)
+ {
+ cvSet2D(g_edges,i,edge,value);
+ }
+ cvShowImage("display", g_edges);
+ cvWaitKey(0);
+}
+
+/**
+ * For testing purposes
+ */
+int main(int argc, char ** argv)
+{
+ //cvNamedWindow( "display", CV_WINDOW_AUTOSIZE );// Create a window for display.
+ //gettimeofday(&start, NULL);
+ test_left = 100;
+ test_right = 500;
+ Microscope_Init();
+
+ cvNamedWindow( "display", CV_WINDOW_AUTOSIZE);
+// cvShowImage("display", g_data);
+// cvWaitKey(0);
+ double width;
+
+ double edge;
+ Microscope_Read(&edge,15);
+ //For testing purposes, overlay the given average line over the image
+ Draw_Edge(edge);
+
+}
+
git.ucc.asn.au / matches / MCTX3420.git / commitdiff
UCC git Repository :: git.ucc.asn.au
