IDVerify

Returns the overall quality grade of the symbol based on the selected metrics.

Returns the row coordinate (in pixels) of the upper left-hand corner of a barcode or the column coordinate for 2D symbols at the indexed (0 to 3) finder pattern point. For more information, see Finder Pattern Points.

Returns the column coordinate (in pixels) of the upper left-hand corner of a barcode or the column coordinate for 2D symbols at the indexed (0 to 3) finder pattern point. For more information, see Finder Pattern Points.

Returns the Modulation of the symbol as defined by the selected metric method. Either ISO 15415 or AIM-DPM metrics must be enabled in the VerifyIDCode function. For more information, see VerifyIDCode.

• Grade A = 4.0
• Grade B = 3.0
• Grade C = 2.0
• Grade D = 1.0
• Grade F = 0.0

Returns diagnostic strings to provide information regarding ReadIDCode failures. Depending on the code type being verified, the grid size, polarity, resolution, ECC level, and in some cases code type, is also returned.

See diagnostic information strings

If ISO 15415 is selected, returns the symbol contrast metric result, which is the percentage difference between the foreground and background grey levels.

• Grade A (4.0): 0.70 ≤ x < 1.00
• Grade B (3.0): 0.55 ≤ x < 0.70
• Grade C (2.0): 0.40 ≤ x < 0.55
• Grade D (1.0): 0.20 ≤ x < 0.40
• Grade F (0.0): 0.00 ≤ x < 0.20

If AIM-DPM (Either Process control or Contract Compliance) is selected, returns the symbol contrast metric, which is computed as the difference between the light and dark distribution means as a percentage of the light distribution mean. The AIM-DPM standard requires that the image be acquired such that the light distribution is at 78 percent to within a ± 8% tolerance range.

• Grade A (4.0): 0.30 ≤ x < 1.00
• Grade B (3.0): 0.25 ≤ x < 0.30
• Grade C (2.0): 0.20 ≤ x < 0.25
• Grade D (1.0): 0.15 ≤ x < 0.20
• Grade F (0.0): 0.00 ≤ x < 0.15

Returns the 2D symbol print growth metricThe horizontal and vertical print growths are calculated independently and the lower score is returned. result.

• Grade A (4.0): -0.50 ≤ x ≤ 0.50
• Grade B (3.0): -0.70 ≤ x < -0.50 or 0.50 < x ≤ 0.70
• Grade C (2.0): -0.85 ≤ x < -0.70 or 0.70 < x ≤ 0.85
• Grade D (1.0): -1.00 ≤ x < -0.85 or 0.85 < x ≤ 1.00
• Grade F (0.0): x < -1.00 or x > 1.00

Returns the print growth along the horizontal dimension of the 2D symbol.

• Grade A (4.0): -0.50 ≤ x ≤ 0.50
• Grade B (3.0): -0.70 ≤ x < -0.50 or 0.50 < x ≤ 0.70
• Grade C (2.0): -0.85 ≤ x < -0.70 or 0.70 < x ≤ 0.85
• Grade D (1.0): -1.00 ≤ x < -0.85 or 0.85 < x ≤ 1.00
• Grade F (0.0): x < -1.00 or x > 1.00

Returns the print growth along the vertical dimension of the 2D symbol.

• Grade A (4.0): -0.50 ≤ x ≤ 0.50
• Grade B (3.0): -0.70 ≤ x < -0.50 or 0.50 < x ≤ 0.70
• Grade C (2.0): -0.85 ≤ x < -0.70 or 0.70 < x ≤ 0.85
• Grade D (1.0): -1.00 ≤ x < -0.85 or 0.85 < x ≤ 1.00
• Grade F (0.0): x < -1.00 or x > 1.00

Returns the 2D symbol axial non-uniformity metric result.

• Grade A (4.0): 0.00 ≤ x ≤ 0.06
• Grade B (3.0): 0.06 < x ≤ 0.08
• Grade C (2.0): 0.08 < x ≤ 0.10
• Grade D (1.0): 0.10 < x ≤ 0.12
• Grade F (0.0): 0.12 < x ≤ 1.00

Indicates whether the symbol was decoded successfully.

• Grade A (4.0): 1
• Grade B (3.0): N/A
• Grade C (2.0): N/A
• Grade D (1.0): N/A
• Grade F (0.0): 0

Returns the Modulation of the symbol as defined by the selected metric method. Either ISO 15415 or AIM-DPM metrics must be enabled in the VerifyIDCode function. For more information, see VerifyIDCode.

• Grade A = 4.0
• Grade B = 3.0
• Grade C = 2.0
• Grade D = 1.0
• Grade F = 0.0

If ISO 15415 is selected, returns the symbol contrast metric result, which is the percentage difference between the foreground and background grey levels.

• Grade A (4.0): 0.70 ≤ x < 1.00
• Grade B (3.0): 0.55 ≤ x < 0.70
• Grade C (2.0): 0.40 ≤ x < 0.55
• Grade D (1.0): 0.20 ≤ x < 0.40
• Grade F (0.0): 0.00 ≤ x < 0.20

If AIM-DPM (Either Process control or Contract Compliance) is selected, returns the symbol contrast metric, which is computed as the difference between the light and dark distribution means as a percentage of the light distribution mean. The AIM-DPM standard requires that the image be acquired such that the light distribution is at 78 percent to within a ± 8% tolerance range.

• Grade A (4.0): 0.30 ≤ x < 1.00
• Grade B (3.0): 0.25 ≤ x < 0.30
• Grade C (2.0): 0.20 ≤ x < 0.25
• Grade D (1.0): 0.15 ≤ x < 0.20
• Grade F (0.0): 0.00 ≤ x < 0.15

Returns the ISO 15415 Extreme Reflectance for the symbol. The ISO 15415 metrics must be enabled in the VerifyIDCode function. This metric is not part of the AIM-DPM standard, and will return #ERR if AIM-DPM is selected.

Extreme Reflectance is a yes/no value indicating if the substrate surrounding the symbol contains reflectance extremes that can interfere with reading.

Extreme reflectance recomputes the modulation and fixed pattern damage grades with thresholds based on an extended region beyond the standard quiet zone. Only attempt extreme reflectance computation if the modulation, decode, and fixed pattern damage grades are 1 or greater.

The function returns #ERR if IDVerify cannot determine extreme reflectance.

• Grade A (4.0): 1
• Grade B (3.0): N/A
• Grade C (2.0): N/A
• Grade D (1.0): N/A
• Grade F (0.0): 0

Returns the Fixed Pattern Damage metric of the symbol. Either ISO 15415 or AIM-DPM metrics must be enabled in the VerifyIDCode function. Fixed pattern damage is measured differently between ISO 15415 and AIM-DPM. For more information, see VerifyIDCode.

• Grade A = 4.0
• Grade B = 3.0
• Grade C = 2.0
• Grade D = 1.0
• Grade F = 0.0

Returns the Grid Non-uniformity of the symbol. Either ISO 15415 or AIM-DPM metrics must be enabled in the VerifyIDCode function. For more information, see VerifyIDCode.

• Grade A (4.0): x ≤ 0.38
• Grade B (3.0): 0.38 < x ≤ 0.50
• Grade C (2.0): 0.50 < x ≤ 0.63
• Grade D (1.0): 0.63 < x ≤ 0.75
• Grade F (0.0): x > 0.75

Returns the 2D symbol print growth metric result. The horizontal and vertical print growths are calculated independently and the lower score is returned. Both 15415 and AIM-DPM classify print growth as a process control metric; they do not define any grade mapping and do not use it for computing the symbol grade.

Returns the print growth along the horizontal dimension of the 2D symbol.

• Grade A (4.0): -0.50 ≤ x ≤ 0.50
• Grade B (3.0): -0.70 ≤ x < -0.50 or 0.50 < x ≤ 0.70
• Grade C (2.0): -0.85 ≤ x < -0.70 or 0.70 < x ≤ 0.85
• Grade D (1.0): -1.00 ≤ x < -0.85 or 0.85 < x ≤ 1.00
• Grade F (0.0): x < -1.00 or x > 1.00

Returns the print growth along the vertical dimension of the 2D symbol.

• Grade A (4.0): -0.50 ≤ x ≤ 0.50
• Grade B (3.0): -0.70 ≤ x < -0.50 or 0.50 < x ≤ 0.70
• Grade C (2.0): -0.85 ≤ x < -0.70 or 0.70 < x ≤ 0.85
• Grade D (1.0): -1.00 ≤ x < -0.85 or 0.85 < x ≤ 1.00
• Grade F (0.0): x < -1.00 or x > 1.00

Returns the 2D symbol axial non-uniformity metric result.

• Grade A (4.0): 0.00 ≤ x ≤ 0.06
• Grade B (3.0): 0.06 < x ≤ 0.08
• Grade C (2.0): 0.08 < x ≤ 0.10
• Grade D (1.0): 0.10 < x ≤ 0.12
• Grade F (0.0): 0.12 < x ≤ 1.00

Indicates whether the symbol was decoded successfully.

• Grade A (4.0): 1
• Grade B (3.0): N/A
• Grade C (2.0): N/A
• Grade D (1.0): N/A
• Grade F (0.0): 0

Returns the grayscale background uniformity of a 2D symbol (including the quiet zone). A symbol with a uniform gray level for the quiet zone and the modules that represent binary data bit 0 is considered to be of good quality.

• Grade A (4.0): 0.9 ≤ x ≤ 1.0
• Grade B (3.0): 0.8 ≤ x < 0.9
• Grade C (2.0): 0.7 ≤ x < 0.8
• Grade D (1.0): 0.6 ≤ x < 0.7
• Grade F (0.0): 0.0 ≤ x < 0.6

Returns the measurement of the bi-modal characteristics of the modules that represent binary data bit 1 or 0. The gray levels of the modules are extracted from the sampling grid defined in the AIM reference decode algorithm.

• Grade A (4.0): 0.75 ≤ x ≤ 1.00
• Grade B (3.0): 0.60 ≤ x < 0.75
• Grade C (2.0): 0.50 ≤ x < 0.60
• Grade D (1.0): 0.40 ≤ x < 0.50
• Grade F (0.0): 0.00 ≤ x < 0.40

Returns the value of the extent to which the finder pattern (including timing pattern) of a symbol conforms to the AIM symbology specification. In particular, it measures how well adjacent modules of the same color form solid lines and modules of different color have the same size. A low value of this metric corresponds to low likelihood of the symbol location step of the AIM reference decode algorithm being successful. This function also measures the ratio of the number of modules in the finder pattern (including timing pattern) that represent expected binary data bit 0 or 1.

• Grade A (4.0): 1.0
• Grade B (3.0): 0.9 ≤ x < 1.0
• Grade C (2.0): 0.8 ≤ x < 0.9
• Grade D (1.0): 0.7 ≤ x < 0.8
• Grade F (0.0): 0.0 ≤ x < 0.7

Returns the value of how well a dot-peened symbol's finder pattern conforms to the AIM specification.

• Grade A (4.0): 1.0
• Grade B (3.0): 0.9 ≤ x < 1.0
• Grade C (2.0): 0.8 ≤ x < 0.9
• Grade D (1.0): 0.7 ≤ x < 0.8
• Grade F (0.0): 0.0 ≤ x < 0.7

Returns the value of the sharpness of the edges in the image by comparing the edge magnitude obtained from a 3x3 Sobel edge detector to the image contrast. An image with high sharpness value is considered to be well-focused and of good quality.

• Grade A (4.0): 0.5 ≤ x ≤ 1.0
• Grade B (3.0): 0.4 ≤ x < 0.5
• Grade C (2.0): 0.3 ≤ x < 0.4
• Grade D (1.0): 0.2 ≤ x < 0.3
• Grade F (0.0): 0.0 ≤ x < 0.2

Returns the deviation, in degrees, from perpendicular of the symbols X and Y-axes.

• Grade A (4.0): x ≤ 7.0
• Grade B (3.0): N/A
• Grade C (2.0): N/A
• Grade D (1.0): N/A
• Grade F (0.0): x > 7.0

Returns the IAQG 9132 grade for angle of distortion.

• Grade A (4.0): x ≤ 7.0
• Grade B (3.0): N/A
• Grade C (2.0): N/A
• Grade D (1.0): N/A
• Grade F (0.0): x > 7.0

Returns the percentage indicating how well the centers of the cells in the symbol fit their expected positions.

• Grade A (4.0): 0.0 ≤ x ≤ 10.0
• Grade B (3.0): 10.0 ≤ x < 20.0
• Grade C (2.0): N/A
• Grade D (1.0): N/A
• Grade F (0.0): 20.0 ≤ x < 100.0

Returns the average of the cell diameters as a percentage of the expected cell diameter.

• Grade A (4.0): 60.0 < x < 105.0
• Grade B (3.0): N/A
• Grade C (2.0): N/A
• Grade D (1.0): N/A
• Grade F (0.0): 0.0 ≤ x ≤ 60.0 and 105.0 ≤ x ≤ 150.0

Returns the average difference in cell widths and heights as a percentage of the expected cell size.

• Grade A (4.0): 0.0 ≤ x < 20.0
• Grade B (3.0): N/A
• Grade C (2.0): N/A
• Grade D (1.0): N/A
• Grade F (0.0): 20.0 ≤ x < 100.0

Returns the percentage of ON cells in the symbol that are outside either dot size or ovality range.

Returns the IAQG 9132 grade for percentage of ON cells that are outside dot size or ovality range. If the value is above 2%, this metric is a Fail (0) grade, otherwise it is a Pass (4).

Returns the percentage of ON cells in the symbol that exceed position tolerance range.

Returns the IAQG 9132 grade for percentage of ON cells that exceed position tolerance range.

• Grade A (4.0): 1
• Grade B (3.0): N/A
• Grade C (2.0): N/A
• Grade D (1.0): N/A
• Grade F (0.0):  0

Returns the standard deviation of dot position shift errors.

• Grade A (4.0): 0.0 ≤ x < 20.0
• Grade B (3.0): N/A
• Grade C (2.0): N/A
• Grade D (1.0): N/A
• Grade F (0.0): 20.0 ≤ x < 100.0

Returns the standard deviation of all the cell diameters.

• Grade A (4.0): 0.0 ≤ x < 20.0
• Grade B (3.0): N/A
• Grade C (2.0): N/A
• Grade D (1.0): N/A
• Grade F (0.0): 20.0 ≤ x < 100.0

Returns the average pitch of the bars in the Postal barcode.

Returns the average skew of the bars in the Postal barcode.

Returns the average space between bars in the Postal barcode.

Returns the average void spacing (area without ink) of the bars in the Postal barcode.

Returns the average height of the specified type of bars in the Postal barcode (Index Input Values: 0 = short/timing, 1 = ascender, 2 = descender, 3 = tall/full).

Returns the average width of the bars in the Postal barcode.

Returns the average shift of the bars from the baseline in the Postal barcode.

Returns the average background reflectance.

Returns the clearance (quiet zone) to the bottom of the code.

Returns the clearance (quiet zone) to the left of the code.

Returns the clearance (quiet zone) to the right of the code.

Returns the clearance (quiet zone) to the top of the code.

Returns the symbol contrast metric result, which is the percentage difference between the foreground and background grey levels.

Returns the maximum height of the specified type of bars in the Postal barcode (Index Input Values: 0 = short/timing, 1 = ascender, 2 = descender, 3 = tall/full).

Returns the maximum pitch of the bars in the Postal barcode.

Returns the maximum skew of the bars in the Postal barcode.

Returns the maximum space between bars in the Postal barcode.

Returns the maximum void spacing (area without ink) of the bars in the Postal barcode.

Returns the maximum width of the bars in the Postal barcode in the Postal barcode.

Returns the maximum shift of the bars from the baseline in the Postal barcode.

Returns the maximum background reflectance.

Returns the maximum contrast between foreground and background (in grey levels).

Returns the maximum over-ink size of the bars in the Postal barcode.

Returns the minimum height of the specified type of bars in the Postal barcode (Index Input Values: 0 = short/timing, 1 = ascender, 2 = descender, 3 = tall/full).

Returns the minimum pitch of the bars in the Postal barcode.

Returns the minimum space between bars in the Postal barcode.

Returns the minimum void spacing (area without ink) of the bars in the Postal barcode.

Returns the minimum width of the bars in the Postal barcode.

Returns the minimum skew of the bars in the Postal barcode.

Returns the minimum shift of the bars from the baseline.

Returns the minimum background reflectance.

Returns the minimum contrast between foreground and background (in grey levels.)

Returns the minimum over-ink size of the bars.

Returns the number of bars found in a Postal barcode.

Returns the baseline shift of the indexed bar in the Postal barcode.

Returns the background reflectance of the indexed bar in the Postal barcode.

Returns the column number of the indexed bar in the Postal barcode. For 2-State codes (e.g., POSTNET and PLANET), the bar location is the center of the bottom edge of the bar. For 4-State codes (e.g., UPU 4-State, USPS OneCode 4-State, Japan Post 4-State, Australia Post 4-State), this is the center of the T-element of the bar.

Returns the contrast of the indexed bar in the Postal barcode.

Returns the height of the indexed bar in the Postal barcode.

Returns the over-ink size of the indexed bar in the Postal barcode.

Returns the pitch of the indexed bar in the Postal barcode.

Returns the row number of the indexed bar in the Postal barcode. For 2-State codes (e.g., POSTNET and PLANET), the bar location is the center of the bottom edge of the bar. For 4-State codes (e.g., UPU 4-State, USPS OneCode 4-State, Japan Post 4-State, Australia Post 4-State), this is the center of the T-element of the bar.

Returns the skew of the indexed bar in the Postal barcode.

Returns the space of the indexed bar in the Postal barcode.

Returns the type of the indexed bar in the Postal barcode (Output Values: 0 = short/timing, 1 = ascender, 2 = descender, 3 = tall/full).

Returns the void spacing of the indexed bar in the Postal barcode.

Returns the width of the indexed bar in the Postal barcode.

Returns the average over-ink size of the bars in the Postal barcode.

Returns the standard deviation of the height of the specified type of bars in the Postal barcode (Index Input Values: 0 = short/timing, 1 = ascender, 2 = descender, 3 = tall/full).

Returns the standard deviation of the pitch of the bars in the Postal barcode.

Returns the standard deviation of the skew of the bars in the Postal barcode.

Returns the standard deviation of the space width between bars in the Postal barcode.

Returns the standard deviation of the void spacing (area without ink) of the bars in the Postal barcode.

Returns the standard deviation of the width of the bars  in the Postal barcode.

Returns the standard deviation of the shift of the bars from the baseline.

Returns the standard deviation of the background reflectance.

Returns the standard deviation of the over-ink size of the bars.