Add test cases for double and char

unit_tests/Tests_Utils.cpp

@@ -24,9 +24,9 @@ cv::Mat createRandomMat(int rows, int cols) {
 
 // TEMPLATE_TEST_CASE("Opencv Utils", "[Utils][OpenCV]", char, unsigned char, short, unsigned short, int, float, double) {
 // TODO : perform test for char and double
-TEMPLATE_TEST_CASE("Opencv Utils", "[Utils][OpenCV]", unsigned char, short, unsigned short, int, float) {
+TEMPLATE_TEST_CASE("Opencv Utils", "[Utils][OpenCV]", signed char, unsigned char, short, unsigned short, int, float, double) {
     
-    constexpr int num_test_matrices = 1000;
+    constexpr int num_test_matrices = 50;
 
     SECTION("Test create tensor from opencv and convert to cpu") {
         // Generate random cv::mat