core image几个滤镜样例 oc版本号和swift版本号

oc版本号

//万花筒模式

+ (CGImageRef) getKaleidoscope:(CIContext *)context

{

    CIImage * image =

    [CIImage imageWithCGImage:[UIImage imageNamed:@"Icon"].CGImage];

    CIFilter * kaleidoscope = [CIFilter filterWithName:@"CIKaleidoscope"];

    [kaleidoscope setDefaults];

    [kaleidoscope setValue:image forKey:kCIInputImageKey];

    [kaleidoscope setValue:[CIVector vectorWithX:5 Y:0] forKey:kCIInputCenterKey];

    CIImage * result = [kaleidoscope valueForKey:kCIOutputImageKey];

    CGRect extent = [result extent];

    CGImageRef cgImage = [context createCGImage:result fromRect:extent];

    return cgImage;

}

//凹凸变形

+ (CGImageRef) getBumpDistortion:(CIContext *)context

{

    CIImage * image =

    [CIImage imageWithCGImage:[UIImage imageNamed:@"Icon"].CGImage];

    CIFilter * bumpDistortion = [CIFilter filterWithName:@"CIBumpDistortion"];

    [bumpDistortion setDefaults];

    [bumpDistortion setValue:image forKey:kCIInputImageKey];

    [bumpDistortion setValue:[CIVector vectorWithX:10 Y:5] forKey:kCIInputCenterKey];

    [bumpDistortion setValue:@55.0f forKey:kCIInputRadiusKey];

    [bumpDistortion setValue:@(3.0f) forKey:kCIInputScaleKey];

    CIImage * result = [bumpDistortion valueForKey:kCIOutputImageKey];

    CGRect extent = [result extent];

    CGImageRef cgImage = [context createCGImage:result fromRect:extent];

    return cgImage;

}

//色调调整

+ (CGImageRef) getHueAdjust:(CIContext *)context

{

    CIImage * image = [CIImage imageWithCGImage:[UIImage imageNamed:@"Icon"].CGImage];

    CIFilter * hueAdjust = [CIFilter filterWithName:@"CIHueAdjust"];

    [hueAdjust setValue:image forKey:kCIInputImageKey];

    [hueAdjust setValue:@2.094f forKey:kCIInputAngleKey];

    CIImage * result = [hueAdjust valueForKey:kCIOutputImageKey];

    CGRect extent = [result extent];

    CGImageRef cgImage = [context createCGImage:result fromRect:extent];

    return cgImage;

}

//变暗

+ (CGImageRef) getGloom:(CIContext *) context

{

    CIImage * image = [CIImage imageWithCGImage:[UIImage imageNamed:@"Icon"].CGImage];

    CIFilter * gloom = [CIFilter filterWithName:@"CIGloom"];

    [gloom setDefaults];

    [gloom setValue:image forKey:kCIInputImageKey];

    [gloom setValue:@5.0f forKey:kCIInputRadiusKey];

    [gloom setValue:@1.0f forKey:kCIInputIntensityKey];

    CIImage * result = [gloom valueForKey:kCIOutputImageKey];

    CGRect extent = [result extent];

    CGImageRef cgImage = [context createCGImage:result fromRect:extent];

    return cgImage;

}

//深褐色调

+ (CGImageRef) getSepiaTone:(CIContext *) context

{

    CIImage * image = [CIImage imageWithCGImage:[UIImage imageNamed:@"Icon"].CGImage];

    CIFilter * sepiaTone = [CIFilter filterWithName:@"CISepiaTone"];

    [sepiaTone setDefaults];

    [sepiaTone setValue:image forKey:kCIInputImageKey];

    [sepiaTone setValue:@0.8f forKey:kCIInputIntensityKey];

    CIImage * result = [sepiaTone valueForKey:kCIOutputImageKey];

    CGRect extent = [result extent];

    CGImageRef cgImage = [context createCGImage:result fromRect:extent];

    return cgImage;

}

//合成

+ (CGImageRef) getAdditionCompositing:(CIContext *) context

{

    CIImage * image = [CIImage imageWithCGImage:[UIImage imageNamed:@"Icon"].CGImage];

    CIImage * image1 = [CIImage imageWithCGImage:[UIImage imageNamed:@"ren"].CGImage];

    CIFilter * accordionFoldTransition = [CIFilter filterWithName:@"CIAdditionCompositing"];

    [accordionFoldTransition setDefaults];

    [accordionFoldTransition setValue:image forKey:kCIInputImageKey];

    [accordionFoldTransition setValue:image1 forKey:kCIInputBackgroundImageKey];

    CIImage * result = [accordionFoldTransition valueForKey:kCIOutputImageKey];

    CGRect extent = [result extent];

    CGImageRef cgImage = [context createCGImage:result fromRect:extent];

    return cgImage;

}

//高斯模糊

+ (CGImageRef) getGaussianBlur:(CIContext *) context

{

    CIImage * image = [CIImage imageWithCGImage:[UIImage imageNamed:@"Icon"].CGImage];

    CIFilter * gaussianBlur = [CIFilter filterWithName:@"CIGaussianBlur"];

    [gaussianBlur setDefaults];

    [gaussianBlur setValue:image forKey:kCIInputImageKey];

    [gaussianBlur setValue:@5.0f forKey:kCIInputRadiusKey];

    CIImage * result = [gaussianBlur valueForKey:kCIOutputImageKey];

    CGRect extent = [result extent];

    CGImageRef cgImage = [context createCGImage:result fromRect:extent];

    return cgImage;

}

//变焦模糊

+ (CGImageRef) getZoomBlur:(CIContext *) context

{

    CIImage * image = [CIImage imageWithCGImage:[UIImage imageNamed:@"Icon"].CGImage];

    CIFilter * zoomBlur = [CIFilter filterWithName:@"CIZoomBlur"];

    [zoomBlur setDefaults];

    [zoomBlur setValue:image forKey:kCIInputImageKey];

    [zoomBlur setValue:@10.0f forKey:@"inputAmount"];

    [zoomBlur setValue:[CIVector vectorWithCGPoint:CGPointMake(10, 10)] forKey:kCIInputCenterKey];

    CIImage * result = [zoomBlur valueForKey:kCIOutputImageKey];

    CGRect extent = [result extent];

    CGImageRef cgImage = [context createCGImage:result fromRect:extent];

    return cgImage;

}

//白点调整

+ (CGImageRef) getWhitePointAdjust:(CIContext *) context

{

    CIImage * image = [CIImage imageWithCGImage:[UIImage imageNamed:@"Icon"].CGImage];

    CIFilter * zoomBlur = [CIFilter filterWithName:@"CIWhitePointAdjust"];

    [zoomBlur setDefaults];

    [zoomBlur setValue:image forKey:kCIInputImageKey];

    [zoomBlur setValue:[CIColor colorWithRed:1.0 green:0.5 blue:1.0 alpha:1.0] forKey:@"inputColor"];

    CIImage * result = [zoomBlur valueForKey:kCIOutputImageKey];

    CGRect extent = [result extent];

    CGImageRef cgImage = [context createCGImage:result fromRect:extent];

    return cgImage;

}

//标签效应

+ (CGImageRef) getVignetteEffect:(CIContext *) context

{

    CIImage * image = [CIImage imageWithCGImage:[UIImage imageNamed:@"Icon"].CGImage];

    CIFilter * zoomBlur = [CIFilter filterWithName:@"CIVignetteEffect"];

    [zoomBlur setDefaults];

    [zoomBlur setValue:image forKey:kCIInputImageKey];

    [zoomBlur setValue:[CIVector vectorWithCGPoint:CGPointMake(10, 10)] forKey:kCIInputCenterKey];

    [zoomBlur setValue:@0.5f forKey:@"inputFalloff"];

    [zoomBlur setValue:@1.0f forKey:@"inputIntensity"];

    [zoomBlur setValue:@100.0f forKey:@"inputRadius"];

    CIImage * result = [zoomBlur valueForKey:kCIOutputImageKey];

    CGRect extent = [result extent];

    CGImageRef cgImage = [context createCGImage:result fromRect:extent];

    return cgImage;

}

//多个效果合成

+ (CGImageRef) getMix:(CIContext *) context

{

    CIImage * image = [CIImage imageWithCGImage:[UIImage imageNamed:@"Icon"].CGImage];

    CIFilter * zoomBlur = [CIFilter filterWithName:@"CIVignetteEffect"];

    [zoomBlur setDefaults];

    [zoomBlur setValue:image forKey:kCIInputImageKey];

    [zoomBlur setValue:[CIVector vectorWithCGPoint:CGPointMake(10, 10)] forKey:kCIInputCenterKey];

    [zoomBlur setValue:@0.5f forKey:@"inputFalloff"];

    [zoomBlur setValue:@1.0f forKey:@"inputIntensity"];

    [zoomBlur setValue:@100.0f forKey:@"inputRadius"];

    CIImage * result = [zoomBlur valueForKey:kCIOutputImageKey];

    CIFilter * gaussianBlur = [CIFilter filterWithName:@"CIGaussianBlur"];

    [gaussianBlur setDefaults];

    [gaussianBlur setValue:result forKey:kCIInputImageKey];

    [gaussianBlur setValue:@5.0f forKey:kCIInputRadiusKey];

    result = [gaussianBlur valueForKey:kCIOutputImageKey];

    CGRect extent = [result extent];

    CGImageRef cgImage = [context createCGImage:result fromRect:extent];

    return cgImage;

}

以上介绍了几个滤镜模式，假设想查询系统内置了多少种滤镜，能够运行下面代码查看：

//查看全部内置滤镜

NSArray *filterNames=[CIFilterfilterNamesInCategory:kCICategoryBuiltIn];

    for (NSString *filterNamein filterNames) {

        CIFilter *filter=[CIFilterfilterWithName:filterName];

        NSLog(@"\rfilter:%@\rattributes:%@",filterName,[filterattributes]);

    }

以下截取控制台输出的部分滤镜消息。

watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQv/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center" alt="">

就拿CIZoomBlur滤镜模式来说。打印出来的信息。能够看到，里面定义了一些属性（每种滤镜，所含有的属性会有区别。在使用的时候，特别要注意）。

属性名称能够使用定义好的结构体成员kCIInputImageKey。或者直接@"inputImage"调用，都是表示输入的图片。

inputImage相应的value里面定义了这个属性是什么类型的。属性描写叙述等。

假设须要其它滤镜模式的能够去查看。

swift版本号

//万花筒模式

    static func getKaleidoscope(context: CIContext) -> CGImageRef {

        let imageName = UIImage(named:"Icon")?

.CGImage

        let image = CIImage(CGImage: (imageName)!)

        let kaleidoscope  = CIFilter(name:"CIKaleidoscope");

        kaleidoscope?

.setDefaults();

        kaleidoscope?.setValue(image, forKey: kCIInputImageKey);

        kaleidoscope?.setValue(CIVector(x: 5, y: 0), forKey: kCIInputCenterKey);

        let result  = kaleidoscope?.valueForKey(kCIOutputImageKey);

        let extent = result?.extent;

        let cgImage = context.createCGImage(result as! CIImage, fromRect: extent!)

        return cgImage

    }

    //凹凸变形

    static func getBumpDistortion(context: CIContext) -> CGImageRef {

        let imageName = UIImage(named:"Icon")?

.CGImage

        let image = CIImage(CGImage: (imageName)!)

        let bumpDistortion = CIFilter(name: "CIBumpDistortion")

        bumpDistortion?.setDefaults()

        bumpDistortion?.setValue(image, forKey: kCIInputImageKey)

        bumpDistortion?

.setValue(CIVector(x: 10, y: 5), forKey: kCIInputCenterKey)

        bumpDistortion?

.setValue(55.0, forKey: kCIInputRadiusKey)

        bumpDistortion?.setValue(3.0, forKey: kCIInputScaleKey)

        let result  = bumpDistortion?.valueForKey(kCIOutputImageKey);

        let extent = result?.extent;

        let cgImage = context.createCGImage(result as! CIImage, fromRect: extent!)

        return cgImage

    }

    //色调调整

    static func getHueAdjust(context: CIContext) -> CGImageRef {

        let imageName = UIImage(named:"Icon")?

.CGImage

        let image = CIImage(CGImage: (imageName)!)

        let hueAdjust = CIFilter(name: "CIHueAdjust")

        hueAdjust?.setValue(image, forKey: kCIInputImageKey)

        hueAdjust?.setValue(2.094, forKey:kCIInputAngleKey)

        let result  = hueAdjust?.valueForKey(kCIOutputImageKey);

        let extent = result?.extent;

        let cgImage = context.createCGImage(result as! CIImage, fromRect: extent!)

        return cgImage

    }

    //变暗

    static func getGloom(context: CIContext) -> CGImageRef {

        let imageName = UIImage(named:"Icon")?.CGImage

        let image = CIImage(CGImage: (imageName)!)

        let gloom = CIFilter(name: "CIGloom")

        gloom?.setDefaults()

        gloom?.setValue(image, forKey: kCIInputImageKey)

        gloom?.setValue(5.0, forKey: kCIInputRadiusKey)

        gloom?.setValue(1.0, forKey: kCIInputIntensityKey)

        let result  = gloom?.valueForKey(kCIOutputImageKey);

        let extent = result?.extent;

        let cgImage = context.createCGImage(result as! CIImage, fromRect: extent!)

        return cgImage

    }

    //深褐色调

    static func getSepiaTone(context: CIContext) -> CGImageRef {

        let imageName = UIImage(named:"Icon")?.CGImage

        let image = CIImage(CGImage: (imageName)!)

        let sepiaTone = CIFilter(name: "CISepiaTone")

        sepiaTone?.setDefaults()

        sepiaTone?.setValue(image, forKey: kCIInputImageKey)

        sepiaTone?.setValue(0.8, forKey: kCIInputIntensityKey)

        let result  = sepiaTone?

.valueForKey(kCIOutputImageKey);

        let extent = result?

.extent;

        let cgImage = context.createCGImage(result as! CIImage, fromRect: extent!)

        return cgImage

    }

    //合成

    static func getAdditionCompositing(context: CIContext) -> CGImageRef {

        let imageName = UIImage(named:"Icon")?.CGImage

        let image = CIImage(CGImage: (imageName)!)

        let image1 = CIImage(CGImage: (UIImage(named:"ren")?.CGImage)!)

        let accordionFoldTransition = CIFilter(name: "CIAdditionCompositing");

        accordionFoldTransition?

.setDefaults()

        accordionFoldTransition?.setValue(image, forKey: kCIInputImageKey)

        accordionFoldTransition?.setValue(image1, forKey: kCIInputBackgroundImageKey)

        let result  = accordionFoldTransition?

.valueForKey(kCIOutputImageKey);

        let extent = result?.extent;

        let cgImage = context.createCGImage(result as! CIImage, fromRect: extent!)

        return cgImage

    }

    //高斯模糊

    static func getGaussianBlur(context: CIContext) -> CGImageRef {

        let imageName = UIImage(named:"Icon")?.CGImage

        let image = CIImage(CGImage: (imageName)!)

        let gaussianBlur = CIFilter(name: "CIGaussianBlur")

        gaussianBlur?.setDefaults()

        gaussianBlur?

.setValue(image, forKey: kCIInputImageKey)

        gaussianBlur?.setValue(5.0, forKey: kCIInputRadiusKey)

        let result  = gaussianBlur?.valueForKey(kCIOutputImageKey);

        let extent = result?.extent;

        let cgImage = context.createCGImage(result as! CIImage, fromRect: extent!)

        return cgImage

    }

    //变焦模糊

    static func getZoomBlur(context: CIContext) -> CGImageRef {

        let imageName = UIImage(named:"Icon")?.CGImage

        let image = CIImage(CGImage: (imageName)!)

        let zoomBlur = CIFilter(name: "CIZoomBlur")

        zoomBlur?.setDefaults()

        zoomBlur?

.setValue(image, forKey: kCIInputImageKey)

        zoomBlur?.setValue(10.0, forKey: "inputAmount")

        zoomBlur?.setValue(CIVector(x: 10, y: 10), forKey: kCIInputCenterKey)

        let result  = zoomBlur?

.valueForKey(kCIOutputImageKey);

        let extent = result?.extent;

        let cgImage = context.createCGImage(result as! CIImage, fromRect: extent!)

        return cgImage

    }

    //白点调整

    static func getWhitePointAdjust(context: CIContext) -> CGImageRef {

        let imageName = UIImage(named:"Icon")?

.CGImage

        let image = CIImage(CGImage: (imageName)!)

        let whitePointAdjust = CIFilter(name: "CIWhitePointAdjust")

        whitePointAdjust?.setDefaults()

        whitePointAdjust?.setValue(image, forKey: kCIInputImageKey)

        whitePointAdjust?.setValue(CIColor(red: 1.0, green: 0.5, blue: 1.0, alpha: 1.0), forKey: "inputColor")

        let result  = whitePointAdjust?.valueForKey(kCIOutputImageKey);

        let extent = result?

.extent;

        let cgImage = context.createCGImage(result as! CIImage, fromRect: extent!)

        return cgImage

    }

    //标签效应

    static func getVignetteEffect(context: CIContext) -> CGImageRef {

        let imageName = UIImage(named:"Icon")?.CGImage

        let image = CIImage(CGImage: (imageName)!)

        let vignetteEffect = CIFilter(name: "CIVignetteEffect")

        vignetteEffect?.setDefaults()

        vignetteEffect?.setValue(image, forKey: kCIInputImageKey)

        vignetteEffect?.setValue(CIVector(x: 10, y: 10), forKey: kCIInputCenterKey)

        vignetteEffect?

.setValue(0.5, forKey: "inputFalloff")

        vignetteEffect?

.setValue(1.0, forKey: "inputIntensity")

        vignetteEffect?.setValue(100.0, forKey: "inputRadius")

        let result  = vignetteEffect?.valueForKey(kCIOutputImageKey);

        let extent = result?.extent;

        let cgImage = context.createCGImage(result as! CIImage, fromRect: extent!)

        return cgImage

    }

    //多个效果合成

    static func getMix(context: CIContext) -> CGImageRef {

        let imageName = UIImage(named:"Icon")?.CGImage

        let image = CIImage(CGImage: (imageName)!)

        let vignetteEffect = CIFilter(name: "CIVignetteEffect")

        vignetteEffect?.setDefaults()

        vignetteEffect?.setValue(image, forKey: kCIInputImageKey)

        vignetteEffect?

.setValue(0.5, forKey: "inputFalloff")

        vignetteEffect?.setValue(1.0, forKey: "inputIntensity")

        vignetteEffect?

.setValue(100.0, forKey: "inputRadius")

        var result  = vignetteEffect?.valueForKey(kCIOutputImageKey);

        let gaussianBlur = CIFilter(name: "CIGaussianBlur")

        gaussianBlur?

.setDefaults()

        gaussianBlur?.setValue(result, forKey: kCIInputImageKey)

        gaussianBlur?

.setValue(5.0, forKey: kCIInputRadiusKey)

        result = gaussianBlur?.valueForKey(kCIOutputImageKey);

        let extent = result?.extent;

        let cgImage = context.createCGImage(result as! CIImage, fromRect: extent!)

        return cgImage

    }

以上介绍了几个滤镜模式，假设想查询系统内置了多少种滤镜。能够运行下面代码查看：

//查看全部内置滤镜

let filterNames = CIFilter.filterNamesInCategory(kCICategoryBuiltIn)

        for filterName in filterNames {

            let filter = CIFilter(name: filterName)

            print("\rfilter:\(filterName)\rattributes:\(filter?.attributes)")

        }

以下截取控制台输出的部分滤镜消息。

就拿CIZoomBlur滤镜模式来说，打印出来的信息，能够看到，里面定义了一些属性（每种滤镜，所含有的属性会有区别。在使用的时候，特别要注意）。

属性名称能够使用定义好的结构体成员kCIInputImageKey，或者直接"inputImage"调用，都是表示输入的图片。

inputImage相应的value里面定义了这个属性是什么类型的。属性描写叙述等。假设须要其它滤镜模式的能够去查看。

project下载地址：http://download.csdn.net/detail/xiaopingping1234567/9458261

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