$MAX_MODULES
$MAX_MODULES :
<p>A somewhat generic detector that looks for a barcode-like rectangular region within an image.
It looks within a mostly white region of an image for a region of black and white, but mostly black. It returns the four corners of the region, as best it can determine.
__construct(\Zxing\BinaryBitmap $image)
| \Zxing\BinaryBitmap | $image |
detect() : \Zxing\Common\Detector\{@link
<p>Detects a rectangular region of black and white -- mostly black -- with a region of mostly white, in an image.</p>
if no Data Matrix Code can be found
ResultPoint}[] describing the corners of the rectangular region. The first and last points are opposed on the diagonal, as are the second and third. The first point will be the topmost point and the last, the bottommost. The second point will be leftmost and the third, the rightmost
findCornerFromCenter(float $centerX, float $deltaX, float $left, float $right, float $centerY, float $deltaY, float $top, float $bottom, float $maxWhiteRun) : \Zxing\ResultPoint
Attempts to locate a corner of the barcode by scanning up, down, left or right from a center point which should be within the barcode.
| float | $centerX | center's x component (horizontal) |
| float | $deltaX | same as deltaY but change in x per step instead |
| float | $left | minimum value of x |
| float | $right | maximum value of x |
| float | $centerY | center's y component (vertical) |
| float | $deltaY | change in y per step. If scanning up this is negative; down, positive; left or right, 0 |
| float | $top | minimum value of y to search through (meaningless when di == 0) |
| float | $bottom | maximum value of y |
| float | $maxWhiteRun | maximum run of white pixels that can still be considered to be within the barcode |
if such a point cannot be found
$a {@link com.google.zxing.ResultPoint} encapsulating the corner that was found
blackWhiteRange( $fixedDimension, $maxWhiteRun, $minDim, $maxDim, $horizontal) : array<mixed,integer>
Computes the start and end of a region of pixels, either horizontally or vertically, that could be part of a Data Matrix barcode.
| $fixedDimension | ||
| $maxWhiteRun | ||
| $minDim | ||
| $maxDim | ||
| $horizontal |
with start and end of found range, or null if no such range is found (e.g. only white was found)
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