problem with camera info

edit

Hi guys

I tried to load my camera info from one yaml that I created with camera calibrate. I wrote this code:

if (info_manager_->validateURL("$(find camera)/webcam.yaml"))
  {
      ROS_INFO("sucsses");
  }
  else
  {
      ROS_ERROR("NEGETIVE");
  }

but I couldn't access the yaml and I got negetive msg and this is my yaml:

image_width: 640
image_height: 480
camera_name: webcam
camera_matrix:
  rows: 3
  cols: 3
  data: [628.605769204058, 0, 330.525636957696, 0, 626.873332341329, 252.463246920169, 0, 0, 1]
distortion_model: plumb_bob
distortion_coefficients:
  rows: 1
  cols: 5
  data: [-0.0709132085265088, 0.102063002021842, -0.00113116095948083, -3.15823206599607e-05, 0]
rectification_matrix:
  rows: 3
  cols: 3
  data: [1, 0, 0, 0, 1, 0, 0, 0, 1]
projection_matrix:
  rows: 3
  cols: 4
  data: [620.937438964844, 0, 329.896849376601, 0, 0, 620.437438964844, 251.769990192599, 0, 0, 0, 1, 0]