Added a brief description about ex14

Signed-off-by: Gaurav Kukreja <gmkukreja@gmail.com>

gaurav/4_Assign/ex14/description.txt

+The inpainting seems to complete at 600 iterations with Huber Regularization.
+Actually there is a limited aritfact even at 800 and 1000 iterations.
+
+Comparison of Huber and Quadratic Regularization
+ * With Quadratic, we can alredy see a significant change in 100 iterations, the change is 
+   gradual with Huber Regularization. 
+ * At iterations > 600, the output seems almost same for each.
\ No newline at end of file

gaurav/4_Assign/ex14/main.cu

@@ -69,7 +69,7 @@ __global__ void findGreen(float* imgIn, float* imgOut, bool* d_mask, size_t n_pi
 __device__ __host__ float huber(float s, float epsilon)
 {
     return 1.0F / max(epsilon, s);
-    //return 1.0F;
+//    return 1.0F;
     //return expf(-s*s / epsilon) / epsilon;
 }
 
@@ -171,7 +171,7 @@ int main(int argc, char **argv)
     getParam("tau", tau, argc, argv);
     cout << "τ: " << tau << endl;
 
-    int N = 800;
+    int N = 1000;
     getParam("N", N, argc, argv);
     cout << "N: " << N << endl;