1. An image processing method, for generating coordination calibration points, the image processing method generating a plurality of coordination calibration points according to a first image, a second image, and a third image, the image processing method comprising the steps of:
subtracting the first image from the second image to generate a first subtracted image;
subtracting the first image from the third image to generate a second subtracted image;
performing an edge detection processing for the first subtracted image to generate a first edge image, wherein the first edge image comprises a first edge, wherein the first edge comprises a plurality of first edge pixels;
performing the edge detection processing for the second subtracted image to generate a second edge image, wherein the second edge image comprises a second edge, wherein the second edge comprises a plurality of second edge pixels;
generating an intersection point pixel according to the first edge and the second edge, the intersection point pixel serving as a coordination calibration point corresponding to the first edge and the second edge;
calculating a neighboring pixel number corresponding to each of the plurality of first edge pixels according to the plurality of first edge pixels and the plurality of second edge pixels;
determining whether the first edge pixel is the accurate intersection point pixel according to the neighboring pixel number corresponding to the first edge pixel; and
generating the intersection point pixel according to the plurality of accurate intersection point pixels.
2. The image processing method of claim 1, wherein the first image comprises a self-color region corresponds to a screen.
3. The image processing method of claim 2, wherein the second image comprises a first strip image which corresponds to the screen, and the third image comprises a second strip image which corresponds to the screen, wherein the first strip image comprises a plurality of first strips and a plurality second strips which are cross-arranged, and the second strip image comprises a plurality of third strips and a plurality of forth strips which are cross-arranged.
4. The image processing method of claim 3, wherein the plurality of first strips and the plurality of second strips are horizontally arranged, and the plurality of third strips and the plurality of forth are vertically arranged.
5. The image processing method of claim 3, wherein the self-color region has a first color, and each of the plurality of first strips is a self-colored strips which has the first color.
6. The image processing method of claim 3, wherein the self-color region has a first color, and each of the plurality of third strips is a self-color strip which has the first color.
7. The image processing method of claim 1, wherein the step of generating the first subtracted image further comprises the step of binarizing the first subtracted image.
8. The image processing method of claim 1, wherein the first image, the second image, and the third image are all captured by an image capture module which comprises a wide-angle lens.
9. An image processing method, for generating coordination calibration points, the image processing method generating a plurality of coordination calibration points according to a first image, a second image, and a third image, the image processing method comprising the steps of:
subtracting the first image from the second image to generate a first subtracted image;
subtracting the first image from the third image to generate a second subtracted image;
performing an edge detection processing for the first subtracted image to generate a first edge image, wherein the first edge image comprises a first edge;
performing the edge detection processing for the second subtracted image to generate a second edge image, wherein the second edge image comprises a second edge; and
generating an intersection point pixel according to the first edge and the second edge, the intersection point pixel serving as a coordination calibration point corresponding to the first edge and the second edge, wherein the step of generating the second subtracted image further comprises the step of binarizing the second subtracted image.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A method comprising:
inclining a spray gun of a high velocity oxygen fuel device at an angle of 15 degrees to a perpendicular to a substrate;
incrementally displacing the spray gun to an angle of 35 degrees to the perpendicular to the substrate;
spraying a surface of the substrate with the spray gun during the displacing of the spray gun; and
covering the substrate with a coating that has a smooth transition zone from a coated region of the substrate to a non-coated region of the substrate; wherein the coating provides erosion protection greater than or equal to that of a coating produced when the spray gun spray angle to the substrate is not varied during the spraying.
2. The method of claim 1, wherein the substrate is a diaphragm partition of a turbine.
3. The method of claim 1, wherein the spray gun is displaced through the angle from about 15 degrees to about 35 degrees to the perpendicular in increments of about 0.5 degrees to about 5 degrees.
4. The method of claim 1, wherein the spray gun is displaced through the angle from about 15 degrees to about 35 degrees to the perpendicular in increments of about 2 degrees.
5. The method of claim 1, wherein the displacing of the spray gun is effective in providing a tapered transition zone of up to 250 micrometers in height over a length of about 2,500 micrometers to about 7,500 micrometers.
6. The method of claim 1, wherein the covering of the substrate is accomplished at a rate of about 25.4 micrometers of coating per pass of the spray gun across the substrate.
7. The method of claim 1, wherein an angle of inclination of the spray gun is adjusted after approximately 25.4 micrometers of coating is applied to the substrate at a previous angle of inclination.
8. The method of claim 1, wherein the coating is a chromium carbide-nickel chromium powder alloy that comprises a composition of about 68 to about 78 wt % chromium and about 14 to about 22 wt % nickel based on the total weight of the chromium carbide-nickel chromium powder alloy.
9. The method of claim 1, wherein the coating has a transition zone that is smoother than the transition zone that is achieved when the spray gun spray angle to the substrate is not varied during the spraying.
10. A method comprising:
inclining a spray gun of a high velocity oxygen fuel device at an angle of 15 degrees to a perpendicular to a substrate;
incrementally displacing the spray gun to an angle of 35 degrees to the perpendicular to the substrate;
spraying a surface of the substrate with the spray gun during the displacing of the spray gun; and
covering the substrate with a coating; wherein the coating has a transition zone that is smoother than the transition zone that is achieved when the spray gun spray angle to the substrate is not varied during the spraying; and wherein the coating provides erosion protection greater than or equal to that of a coating produced when the spray gun spray angle to the substrate is not varied during the spraying.