JPH0444053U - - Google Patents

Description

[Brief explanation of drawings]

Fig. 1 is a block diagram showing a grayscale image processing device according to an embodiment of the present invention, Fig. 2 is a block diagram of an image processing circuit used in the embodiment, and Fig. 3 shows density and its differential value. Graph, Figure 4 is a graph showing the approximate straight line of density, Figure 5 is an explanatory diagram showing the inspection route, Figure 6 is a graph showing how the density changes continuously, Figure 7 is binarized image processing. 8 and 9 are plan views and cross-sectional views of the metal part and the plated part, respectively.
The figure is a graph showing concentration changes in metal parts and plating parts. In the drawings, 1 is an image processing device, 2 is an A/D converter, 3 is an image processing circuit, 4 is a D/A converter, 5 is a solid-state imaging device, 6 is a viewpoint memory, 7 is an inspection route registration memory, 8 is a density judgment low level, 9 is a density judgment high level, 10 is a density memory along the inspection path, 11 is a differential skip setter, 12 is an image memory, 13 is a differential memory along the inspection path, 14 is C
PU, 15 is a differential determination low level, 16 is a differential determination high level, 17 is a change point coordinate value, 18 is a change start point coordinate value, 19 is a monitor television, and , are approximated straight lines.

Claims (1)

[Scope of utility model registration request] In a grayscale image processing device that digitizes an analog signal from an imaging means and stores it as density information, reads out the stored density information, and performs arithmetic processing, there is provided a means for setting a starting point of an examination, and a plurality of measurements from the starting point to the ending point. means for registering an inspection path made up of points; concentration determination means for reading concentration information at the measurement points and determining whether the concentration information falls within a predetermined concentration range; and differential processing for the concentration information at the measurement points. and a concentration differential value determining means for determining whether or not the concentration is within a predetermined differential concentration range; A measurement point that is determined to be outside a predetermined range is detected as a change point, and a straight line that approximates the concentration change between the change point and the measurement point immediately after it is determined. A gradation image processing device comprising: a change start point calculation means for determining a straight line that approximates a density change at a measurement point, and calculating an intersection between the straight line and the straight line as a density change start point.