ImagickKernel::addUnityKernel

(PECL imagick >= 3.3.0)

ImagickKernel::addUnityKernelDescription

설명

public void ImagickKernel::addUnityKernel ( void )

Adds a given amount of the 'Unity' Convolution Kernel to the given pre-scaled and normalized Kernel. This in effect adds that amount of the original image into the resulting convolution kernel. The resulting effect is to convert the defined kernels into blended soft-blurs, unsharp kernels or into sharpening kernels.

인수

이 함수는 인수가 없습니다.

반환값

예제

Example #1 ImagickKernel::addUnityKernel()

<?php



    
function renderKernelTable($matrix) {
        
$output "<table class='infoTable'>";
    
        foreach (
$matrix as $row) {
            
$output .= "<tr>";
            foreach (
$row as $cell) {
                
$output .= "<td style='text-align:left'>";
                if (
$cell === false) {
                    
$output .= "false";
                }
                else {
                    
$output .= round($cell3);
                }
                
$output .= "</td>";
            }
            
$output .= "</tr>";
        }
    
        
$output .= "</table>";
    
        return 
$output;
    }

    
$matrix = [
        [-
10, -1],
        [ 
04,  0],
        [-
10, -1],
    ];

    
$kernel = \ImagickKernel::fromMatrix($matrix);
    
$kernel->scale(1, \Imagick::NORMALIZE_KERNEL_VALUE);
    
$output "Before adding unity kernel: <br/>";
    
$output .= renderKernelTable($kernel->getMatrix());
    
$kernel->addUnityKernel(0.5);
    
$output .= "After adding unity kernel: <br/>";
    
$output .= renderKernelTable($kernel->getMatrix());
    
    
    
$kernel->scale(1, \Imagick::NORMALIZE_KERNEL_VALUE);
    
$output .= "After renormalizing kernel: <br/>";
    
$output .= renderKernelTable($kernel->getMatrix());

    echo 
$output;

?>

Example #2 ImagickKernel::addUnityKernel()

<?php
function addUnityKernel($imagePath) {

    
$matrix = [
        [-
10, -1],
        [ 
04,  0],
        [-
10, -1],
    ];

    
$kernel ImagickKernel::fromMatrix($matrix);

    
$kernel->scale(4, \Imagick::NORMALIZE_KERNEL_VALUE);
    
$kernel->addUnityKernel(0.5);


    
$imagick = new \Imagick(realpath($imagePath));
    
$imagick->filter($kernel);
    
header("Content-Type: image/jpg");
    echo 
$imagick->getImageBlob();

}

?>

add a note add a note

User Contributed Notes

There are no user contributed notes for this page.
To Top