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PHP : Function Reference : Imagick Image Library : Imagick::contrastImage

Imagick::contrastImage

Change the contrast of the image ()
bool Imagick::contrastImage ( bool sharpen )

Warning:

This function is currently not documented; only the argument list is available.

Warning:

This function is EXPERIMENTAL. The behaviour of this function, the name of this function, and anything else documented about this function may change without notice in a future release of PHP. Use this function at your own risk.

Enhances the intensity differences between the lighter and darker elements of the image. Set sharpen to a value other than 0 to increase the image contrast otherwise the contrast is reduced.

Parameters

sharpen

Return Values

Returns TRUE on success.

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Code Examples / Notes » imagick contrastimage

goekar

<? $image = new Imagick('test.jpg'); // open image file $image->contrastImage(9); // 0 - 9 $image->writeImage('test2.jpg'); //save image ?>

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Constants
Installation
Imagick
Imagick::adaptiveBlurImage
Imagick::adaptiveResizeImage
Imagick::adaptiveSharpenImage
Imagick::adaptiveThresholdImage
Imagick::addImage
Imagick::addNoiseImage
Imagick::affineTransformImage
Imagick::annotateImage
Imagick::appendImages
Imagick::averageImages
Imagick::blackThresholdImage
Imagick::blurImage
Imagick::borderImage
Imagick::charcoalImage
Imagick::chopImage
Imagick::clear
Imagick::clipImage
Imagick::clipPathImage
Imagick::clone
Imagick::coalesceImages
Imagick::colorFloodfillImage
Imagick::colorizeImage
Imagick::clutImage
Imagick::combineImages
Imagick::commentImage
Imagick::compareImageChannels
Imagick::compareImageLayers
Imagick::compositeImage
Imagick::__construct
Imagick::contrastImage
Imagick::contrastStretchImage
Imagick::convolveImage
Imagick::cropImage
Imagick::current
Imagick::cycleColormapImage
Imagick::deconstructImages
Imagick::despeckleImage
Imagick::destroy
Imagick::drawImage
Imagick::edgeImage
Imagick::embossImage
Imagick::enhanceImage
Imagick::equalizeImage
Imagick::evaluateImage
Imagick::flattenImages
Imagick::flipImage
Imagick::flopImage
Imagick::frameImage
Imagick::fxImage
Imagick::gammaImage
Imagick::gaussianBlurImage
Imagick::getCompressionQuality
Imagick::getCompression
Imagick::getCopyright
Imagick::getFilename
Imagick::getFormat
Imagick::getHomeURL
Imagick::getImageBackgroundColor
Imagick::getImageBlob
Imagick::getImageBluePrimary
Imagick::getImageBorderColor
Imagick::getImageChannelDepth
Imagick::getImageChannelDistortion
Imagick::getImageChannelExtrema
Imagick::getImageChannelMean
Imagick::getImageChannelStatistics
Imagick::getImageColormapColor
Imagick::getImageColorspace
Imagick::getImageColors
Imagick::getImageCompose
Imagick::getImageDelay
Imagick::getImageDepth
Imagick::getImageDispose
Imagick::getImageDistortion
Imagick::getImageExtrema
Imagick::getImageFilename
Imagick::getImageSize
Imagick::getImageLength
Imagick::getImageFormat
Imagick::getImageGamma
Imagick::getImageGeometry
Imagick::getImageGreenPrimary
Imagick::getImageHeight
Imagick::getImageHistogram
Imagick::getImageIndex
Imagick::getIteratorIndex
Imagick::getImageInterlaceScheme
Imagick::getImageInterpolateMethod
Imagick::getImageIterations
Imagick::getImageMatteColor
Imagick::getImageMatte
Imagick::getImagePage
Imagick::getImagePixelColor
Imagick::getImageProfile
Imagick::getImageProfiles
Imagick::getImageProperty
Imagick::getImageProperties
Imagick::getImageRedPrimary
Imagick::getImageRegion
Imagick::getImageRenderingIntent
Imagick::getImageResolution
Imagick::getImageScene
Imagick::getImageSignature
Imagick::getImageTicksPerSecond
Imagick::getImageTotalInkDensity
Imagick::getImageType
Imagick::getImageUnits
Imagick::getImageVirtualPixelMethod
Imagick::getImageWhitePoint
Imagick::getImageWidth
Imagick::getImage
Imagick::getInterlaceScheme
Imagick::getImageOrientation
Imagick::getNumberImages
Imagick::getOption
Imagick::getPackageName
Imagick::getPage
Imagick::getPixelIterator
Imagick::getPixelRegionIterator
Imagick::getQuantumDepth
Imagick::getQuantumRange
Imagick::getReleaseDate
Imagick::getResourceLimit
Imagick::getResource
Imagick::getSamplingFactors
Imagick::getSizeOffset
Imagick::getSize
Imagick::getVersion
Imagick::hasNextImage
Imagick::hasPreviousImage
Imagick::identifyImage
Imagick::implodeImage
Imagick::labelImage
Imagick::levelImage
Imagick::linearStretchImage
Imagick::magnifyImage
Imagick::matteFloodfillImage
Imagick::medianFilterImage
Imagick::minifyImage
Imagick::modulateImage
Imagick::montageImage
Imagick::morphImages
Imagick::compareImages
Imagick::mosaicImages
Imagick::motionBlurImage
Imagick::negateImage
Imagick::distortImage
Imagick::newImage
Imagick::setImage
Imagick::setImageOpacity
Imagick::newPseudoImage
Imagick::nextImage
Imagick::normalizeImage
Imagick::oilPaintImage
Imagick::optimizeImageLayers
Imagick::paintOpaqueImage
Imagick::paintTransparentImage
Imagick::pingImageBlob
Imagick::pingImageFile
Imagick::pingImage
Imagick::posterizeImage
Imagick::previousImage
Imagick::profileImage
Imagick::queryFormats
Imagick::radialBlurImage
Imagick::raiseImage
Imagick::randomThresholdImage
Imagick::readImageBlob
Imagick::readImageFile
Imagick::readImage
Imagick::reduceNoiseImage
Imagick::removeImageProfile
Imagick::removeImage
Imagick::render
Imagick::resampleImage
Imagick::resizeImage
Imagick::rollImage
Imagick::rotateImage
Imagick::sampleImage
Imagick::scaleImage
Imagick::separateImageChannel
Imagick::sepiaToneImage
Imagick::setBackgroundColor
Imagick::setCompressionQuality
Imagick::setCompression
Imagick::setFilename
Imagick::setFirstIterator
Imagick::setLastIterator
Imagick::setFormat
Imagick::setImageBackgroundColor
Imagick::setImageBias
Imagick::setImageBluePrimary
Imagick::setImageBorderColor
Imagick::setImageChannelDepth
Imagick::setImageColormapColor
Imagick::setImageColorspace
Imagick::setImageCompose
Imagick::setImageCompression
Imagick::setImageDelay
Imagick::setImageDepth
Imagick::setImageDispose
Imagick::setImageExtent
Imagick::setImageFilename
Imagick::setImageFormat
Imagick::setImageGamma
Imagick::setImageGreenPrimary
Imagick::setImageIndex
Imagick::setIteratorIndex
Imagick::setImageInterlaceScheme
Imagick::setImageInterpolateMethod
Imagick::setImageIterations
Imagick::setImageMatteColor
Imagick::setImageMatte
Imagick::setImagePage
Imagick::setImageProfile
Imagick::setImageProperty
Imagick::setImageRedPrimary
Imagick::setImageRenderingIntent
Imagick::setImageResolution
Imagick::setImageScene
Imagick::setImageTicksPerSecond
Imagick::setImageType
Imagick::setImageUnits
Imagick::setImageVirtualPixelMethod
Imagick::setImageWhitePoint
Imagick::setInterlaceScheme
Imagick::setImageOrientation
Imagick::setOption
Imagick::setPage
Imagick::setResolution
Imagick::setResourceLimit
Imagick::setSamplingFactors
Imagick::setSizeOffset
Imagick::setSize
Imagick::setType
Imagick::shadeImage
Imagick::shadowImage
Imagick::sharpenImage
Imagick::shaveImage
Imagick::shearImage
Imagick::sigmoidalContrastImage
Imagick::sketchImage
Imagick::solarizeImage
Imagick::spliceImage
Imagick::spreadImage
Imagick::steganoImage
Imagick::stereoImage
Imagick::stripImage
Imagick::swirlImage
Imagick::textureImage
Imagick::thresholdImage
Imagick::thumbnailImage
Imagick::tintImage
Imagick::transverseImage
Imagick::trimImage
Imagick::uniqueImageColors
Imagick::unsharpMaskImage
Imagick::valid
Imagick::vignetteImage
Imagick::waveImage
Imagick::whiteThresholdImage
Imagick::writeImages
Imagick::writeImage
Imagick::displayImage
Imagick::displayImages
Imagick::cropThumbnailImage
Imagick::roundCorners
Imagick::polaroidImage
Imagick::queryFonts
Imagick::queryFontMetrics
ImagickDraw::affine
ImagickDraw::annotation
ImagickDraw::arc
ImagickDraw::bezier
ImagickDraw::circle
ImagickDraw::clear
ImagickDraw::clone
ImagickDraw::color
ImagickDraw::comment
ImagickDraw::composite
ImagickDraw::__construct
ImagickDraw::destroy
ImagickDraw::ellipse
ImagickDraw::getClipPath
ImagickDraw::getClipRule
ImagickDraw::getClipUnits
ImagickDraw::getFillColor
ImagickDraw::getFillOpacity
ImagickDraw::getFillRule
ImagickDraw::getFontFamily
ImagickDraw::getFontSize
ImagickDraw::getFontStyle
ImagickDraw::getFontWeight
ImagickDraw::getFont
ImagickDraw::getGravity
ImagickDraw::getStrokeAntialias
ImagickDraw::getStrokeColor
ImagickDraw::getStrokeDashArray
ImagickDraw::getStrokeDashOffset
ImagickDraw::getStrokeLineCap
ImagickDraw::getStrokeLineJoin
ImagickDraw::getStrokeMiterLimit
ImagickDraw::getStrokeOpacity
ImagickDraw::getStrokeWidth
ImagickDraw::getTextAlignment
ImagickDraw::getTextAntialias
ImagickDraw::getTextDecoration
ImagickDraw::getTextEncoding
ImagickDraw::getTextUnderColor
ImagickDraw::getVectorGraphics
ImagickDraw::line
ImagickDraw::matte
ImagickDraw::pathClose
ImagickDraw::pathCurveToAbsolute
ImagickDraw::pathCurveToQuadraticBezierAbsolute
ImagickDraw::pathCurveToQuadraticBezierRelative
ImagickDraw::pathCurveToQuadraticBezierSmoothAbsolute
ImagickDraw::pathCurveToQuadraticBezierSmoothRelative
ImagickDraw::pathCurveToRelative
ImagickDraw::pathCurveToSmoothAbsolute
ImagickDraw::pathCurveToSmoothRelative
ImagickDraw::pathEllipticArcAbsolute
ImagickDraw::pathEllipticArcRelative
ImagickDraw::pathFinish
ImagickDraw::pathLineToAbsolute
ImagickDraw::pathLineToHorizontalAbsolute
ImagickDraw::pathLineToHorizontalRelative
ImagickDraw::pathLineToRelative
ImagickDraw::pathLineToVerticalAbsolute
ImagickDraw::pathLineToVerticalRelative
ImagickDraw::pathMoveToAbsolute
ImagickDraw::pathMoveToRelative
ImagickDraw::pathStart
ImagickDraw::point
ImagickDraw::polygon
ImagickDraw::polyline
ImagickDraw::popClipPath
ImagickDraw::popDefs
ImagickDraw::pop
ImagickDraw::popPattern
ImagickDraw::pushClipPath
ImagickDraw::pushDefs
ImagickDraw::push
ImagickDraw::pushPattern
ImagickDraw::rectangle
ImagickDraw::render
ImagickDraw::rotate
ImagickDraw::roundRectangle
ImagickDraw::scale
ImagickDraw::setClipPath
ImagickDraw::setClipRule
ImagickDraw::setClipUnits
ImagickDraw::setFillAlpha
ImagickDraw::setFillColor
ImagickDraw::setFillOpacity
ImagickDraw::setFillPatternURL
ImagickDraw::setFillRule
ImagickDraw::setFontFamily
ImagickDraw::setFontSize
ImagickDraw::setFontStretch
ImagickDraw::setFontStyle
ImagickDraw::setFontWeight
ImagickDraw::setFont
ImagickDraw::setGravity
ImagickDraw::setStrokeAlpha
ImagickDraw::setStrokeAntialias
ImagickDraw::setStrokeColor
ImagickDraw::setStrokeDashArray
ImagickDraw::setStrokeDashOffset
ImagickDraw::setStrokeLineCap
ImagickDraw::setStrokeLineJoin
ImagickDraw::setStrokeMiterLimit
ImagickDraw::setStrokeOpacity
ImagickDraw::setStrokePatternURL
ImagickDraw::setStrokeWidth
ImagickDraw::setTextAlignment
ImagickDraw::setTextAntialias
ImagickDraw::setTextDecoration
ImagickDraw::setTextEncoding
ImagickDraw::setTextUnderColor
ImagickDraw::setVectorGraphics
ImagickDraw::setViewbox
ImagickDraw::skewX
ImagickDraw::skewY
ImagickDraw::translate
ImagickPixel::clear
ImagickPixel::__construct
ImagickPixel::destroy
ImagickPixel::getColor
ImagickPixel::getColorCount
ImagickPixel::getColorValue
ImagickPixel::getHSL
ImagickPixel::isSimilar
ImagickPixel::setColorValue
ImagickPixel::setColor
ImagickPixel::setHSL
ImagickPixelIterator::clear
ImagickPixelIterator::__construct
ImagickPixelIterator::destroy
ImagickPixelIterator::getCurrentIteratorRow
ImagickPixelIterator::getIteratorRow
ImagickPixelIterator::getNextIteratorRow
ImagickPixelIterator::getPreviousIteratorRow
ImagickPixelIterator::newPixelIterator
ImagickPixelIterator::newPixelRegionIterator
ImagickPixelIterator::resetIterator
ImagickPixelIterator::setIteratorFirstRow
ImagickPixelIterator::setIteratorLastRow
ImagickPixelIterator::setIteratorRow
ImagickPixelIterator::syncIterator

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