Photoshop에서는 이미지를 어떻게 혼합하며, 사용 가능한 다양한 혼합 모드는 무엇입니까?

Photoshop이 이미지를 병합하는 방법

Photoshop은 이미지 A의 각 픽셀과 이미지 B의 해당 픽셀에 대해 혼합 작업을 실행하여 이미지를 원활하게 혼합합니다. 각 픽셀은 여러 채널로 구성되며 각 채널은 색상을 나타냅니다. RGB 픽셀의 경우 이러한 채널에는 빨간색, 녹색 및 파란색이 포함됩니다.

두 픽셀을 병합하려면 특정 혼합 작업을 사용하여 해당 채널을 결합합니다. Photoshop의 블렌드 모드는 다음과 같은 수학 함수를 사용합니다.

ChannelBlend_Normal:         ((uint8) A)
ChannelBlend_Lighten:      ((uint8) (B > A) ? B : A)
ChannelBlend_Darken:       ((uint8) (B > A) ? A : B)
ChannelBlend_Multiply:     ((uint8) ((A * B) / 255))
ChannelBlend_Average:      ((uint8) ((A + B) / 2))
ChannelBlend_Add:          ((uint8) min(255, (A + B))))
ChannelBlend_Subtract:     ((uint8) ((A + B < 255) ? 0 : (A + B - 255)))
ChannelBlend_Difference:  ((uint8) abs(A - B))
ChannelBlend_Negation:    ((uint8) (255 - abs(255 - A - B)))
ChannelBlend_Screen:      ((uint8) (255 - (((255 - A) * (255 - B)) >> 8)))
ChannelBlend_Exclusion:   ((uint8) (A + B - 2 * A * B / 255))
ChannelBlend_Overlay:     ((uint8) (B < 128) ? (2 * A * B / 255) : (255 - 2 * (255 - A) * (255 - B) / 255)))
ChannelBlend_SoftLight:   ((uint8) (B < 128) ? (2 * ((A >> 1) + 64)) * ((float) B / 255) : (255 - 2 * (255 - ((A >> 1) + 64)) * (float) (255 - B) / 255))))
ChannelBlend_HardLight:   (ChannelBlend_Overlay(B, A))
ChannelBlend_ColorDodge:  ((uint8) (B == 255) ? B : min(255, ((A << 8 ) / (255 - B)))))
ChannelBlend_ColorBurn:   ((uint8) (B == 0) ? B : max(0, (255 - ((255 - A) << 8 ) / B))))
ChannelBlend_LinearDodge: (ChannelBlend_Add(A, B))
ChannelBlend_LinearBurn:  (ChannelBlend_Subtract(A, B))
ChannelBlend_LinearLight: ((uint8) (B < 128) ? ChannelBlend_LinearBurn(A, (2 * B)) : ChannelBlend_LinearDodge(A, (2 * (B - 128)))))
ChannelBlend_VividLight:  ((uint8) (B < 128) ? ChannelBlend_ColorBurn(A, (2 * B)) : ChannelBlend_ColorDodge(A, (2 * (B - 128)))))
ChannelBlend_PinLight:    ((uint8) (B < 128) ? ChannelBlend_Darken(A, (2 * B)) : ChannelBlend_Lighten(A, (2 * (B - 128)))))
ChannelBlend_HardMix:     ((uint8) ((ChannelBlend_VividLight(A, B) < 128) ? 0 : 255))
ChannelBlend_Reflect:     ((uint8) (B == 255) ? B : min(255, (A * A / (255 - B)))))
ChannelBlend_Glow:        (ChannelBlend_Reflect(B, A))
ChannelBlend_Phoenix:     ((uint8) (min(A, B) - max(A, B) + 255))
ChannelBlend_Alpha:       ((uint8) (O * A + (1 - O) * B))
ChannelBlend_AlphaF:      (ChannelBlend_Alpha(F(A, B), A, O))

단일 RGB 픽셀을 블렌딩하려면:

ImageTColorR = ChannelBlend_Glow(ImageAColorR, ImageBColorR);
ImageTColorB = ChannelBlend_Glow(ImageAColorB, ImageBColorB);
ImageTColorG = ChannelBlend_Glow(ImageAColorG, ImageBColorG);

ImageTColor = RGB(ImageTColorR, ImageTColorB, ImageTColorG);

특정 불투명도(예: 50%)로 블렌딩하려면:

ImageTColorR = ChannelBlend_AlphaF(ImageAColorR, ImageBColorR, Blend_Subtract, 0.5F);

세 채널 모두의 혼합을 단순화하기 위해 버퍼 매크로를 사용할 수 있습니다.

#define ColorBlend_ ## M(T, A, B) (T)[0] = ChannelBlend_ ## M((A)[0], (B)[0]), (T)[1] = ChannelBlend_ ## M((A)[1], (B)[1]), (T)[2] = ChannelBlend_ ## M((A)[2], (B)[2])

다음과 같은 RGB 색상 혼합 매크로가 생성됩니다.

#define ColorBlend_Normal(T, A, B) ColorBlend_Buffer(T, A, B, Normal)
#define ColorBlend_Lighten(T, A, B) ColorBlend_Buffer(T, A, B, Lighten)
#define ColorBlend_Darken(T, A, B) ColorBlend_Buffer(T, A, B, Darken)
#define ColorBlend_Multiply(T, A, B) ColorBlend_Buffer(T, A, B, Multiply)
#define ColorBlend_Average(T, A, B) ColorBlend_Buffer(T, A, B, Average)
#define ColorBlend_Add(T, A, B) ColorBlend_Buffer(T, A, B, Add)
#define ColorBlend_Subtract(T, A, B) ColorBlend_Buffer(T, A, B, Subtract)
#define ColorBlend_Difference(T, A, B) ColorBlend_Buffer(T, A, B, Difference)
#define ColorBlend_Negation(T, A, B) ColorBlend_Buffer(T, A, B, Negation)
#define ColorBlend_Screen(T, A, B) ColorBlend_Buffer(T, A, B, Screen)
#define ColorBlend_Exclusion(T, A, B) ColorBlend_Buffer(T, A, B, Exclusion)
#define ColorBlend_Overlay(T, A, B) ColorBlend_Buffer(T, A, B, Overlay)
#define ColorBlend_SoftLight(T, A, B) ColorBlend_Buffer(T, A, B, SoftLight)
#define ColorBlend_HardLight(T, A, B) ColorBlend_Buffer(T, A, B, HardLight)
#define ColorBlend_ColorDodge(T, A, B) ColorBlend_Buffer(T, A, B, ColorDodge)
#define ColorBlend_ColorBurn(T, A, B) ColorBlend_Buffer(T, A, B, ColorBurn)
#define ColorBlend_LinearDodge(T, A, B) ColorBlend_Buffer(T, A, B, LinearDodge)
#define ColorBlend_LinearBurn(T, A, B) ColorBlend_Buffer(T, A, B, LinearBurn)
#define ColorBlend_LinearLight(T, A, B) ColorBlend_Buffer(T, A, B, LinearLight)
#define ColorBlend_VividLight(T, A, B) ColorBlend_Buffer(T, A, B, VividLight)
#define ColorBlend_PinLight(T, A, B) ColorBlend_Buffer(T, A, B, PinLight)
#define ColorBlend_HardMix(T, A, B) ColorBlend_Buffer(T, A, B, HardMix)
#define ColorBlend_Reflect(T, A, B) ColorBlend_Buffer(T, A, B, Reflect)
#define ColorBlend_Glow(T, A, B) ColorBlend_Buffer(T, A, B, Glow)
#define ColorBlend_Phoenix(T, A, B) ColorBlend_Buffer(T, A, B, Phoenix)

예 :

ColorBlend_Glow(TargetPtr, ImageAPtr, ImageBPtr);

HLS 변환과 관련된 블렌드 모드의 경우:

#define ColorBlend_Hue(T, A, B) ColorBlend_Hls(T, A, B, HueB, LuminationA, SaturationA)

위 내용은 Photoshop에서는 이미지를 어떻게 혼합하며, 사용 가능한 다양한 혼합 모드는 무엇입니까?의 상세 내용입니다. 자세한 내용은 PHP 중국어 웹사이트의 기타 관련 기사를 참조하세요!