Материал: part17

•​Blending Weight Constant = 1.0​

•​Weight 2:​

•​Blending LUT 2 Transfer Function = CONSTANT​

•​Blending Weight Constant = 0.0​

•​Primary Palette Color Lookup Table​

•​RGB LUT Transfer Function = EQUAL_RGB​

•​Alpha LUT Transfer Function = not significant with these Blending LUT Transfer Function values​

•​Secondary Palette Color Lookup Table​

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Note​

Compared to Example 1, the perceived contrast of the displayed grayscale image will likely be different as a consequence​ of the use of PCS-Values as opposed to P-Values unless color management software interpreting the PCS-Values attempts​ to approximate the Grayscale Standard Display Function. This is true regardless of whether a color or grayscale display is​ used.​

Figure QQ.1-2. Example 2​

QQ.1.3 Example 3 - Color Tissue (Pseudo-color) Mapping​

Grayscale mapping only from 1 data frame:​

•​Weight 1:​

•​Blending LUT 1 Transfer Function = CONSTANT​

•​Blending Weight Constant = 1.0​

- Standard -​

•​Weight 2:​

•​Blending LUT 2 Transfer Function = CONSTANT​ •​Blending Weight Constant = 0.0​

•​Primary Palette Color Lookup Table​ •​RGB LUT Transfer Function = TABLE​

•​Alpha LUT Transfer Function = not significant with these Blending LUT Transfer Function values​ •​Red, Green, and Blue Palette Color Lookup Table Descriptors and Data included​

•​Secondary Palette Color Lookup Table​ •​<none>​

Figure QQ.1-3. Example 3​

QQ.1.4 Example 4 - Fixed Proportion Additive Grayscale Tissue and Color Flow​

Grayscale mapping from primary data frame and color mapping from secondary data frame:​ •​Weight 1:​

•​Blending LUT 1 Transfer Function = CONSTANT​

•​Blending Weight Constant = value between 0.0 and 1.0, inclusive​ •​Weight 2:​

•​Blending LUT 2 Transfer Function = CONSTANT​

•​Blending Weight Constant = value between 0.0 and 1.0, inclusive​ •​Primary Palette Color Lookup Table​

- Standard -​

•​RGB LUT Transfer Function = EQUAL_RGB​

•​Alpha LUT Transfer Function = not significant with these Blending LUT Transfer Function values​ •​Secondary Palette Color Lookup Table​

•​RGB LUT Transfer Function = TABLE​

•​Alpha LUT Transfer Function = not significant with these Blending LUT Transfer Function values​ •​Red, Green, and Blue Palette Color Lookup Table Descriptors and Data included​

Figure QQ.1-4. Example 4​

QQ.1.5 Example 5 - Threshold Based On Flow_velocity​

Each output value is either the grayscale tissue intensity value or the colorized flow velocity value based on the magnitude of the flow​ velocity sample value:​

•​Weight 1:​

•​Blending LUT 1 Transfer Function = ALPHA_2​ •​Weight 2:​

•​Blending LUT 2 Transfer Function = ONE_MINUS​ •​Primary Palette Color Lookup Table​

•​RGB LUT Transfer Function = EQUAL_RGB​

•​Alpha LUT Transfer Function = not significant with these Blending LUT Transfer Function values​ •​Secondary Palette Color Lookup Table​

- Standard -​

•​RGB LUT Transfer Function = TABLE​ •​Alpha LUT Transfer Function = TABLE​

•​Red, Green, Blue, and Alpha Palette Color Lookup Table Descriptors and Data included​ •​All Alpha Palette Color Lookup Table Data values (normalized) are either 0.0 or 1.0​

Figure QQ.1-5. Example 5​

QQ.1.6Example6-ThresholdBasedOnFlow_velocityandFlow_varianceW/2dColorMapping​

Each output value is either the grayscale tissue intensity value or a colorized flow/variance value determined by a 2-dimensional​ Secondary RGB Palette Color Lookup Table, based on flow/variance values. The colorized flow/variance value comes from a 2-di-​ mensional Secondary RGB Palette Color LUT:​

•​Weight 1:​

•​Blending LUT 1 Transfer Function = ALPHA_2​

•​Weight 2:​

•​Blending LUT 2 Transfer Function = ONE_MINUS​

•​Primary Palette Color Lookup Table​

•​RGB LUT Transfer Function = EQUAL_RGB​

•​Alpha LUT Transfer Function = not significant with these Blending LUT Transfer Function values​

•​Secondary Palette Color Lookup Table​

•​RGB LUT Transfer Function = TABLE​

•​Alpha LUT Transfer Function = TABLE​

- Standard -​

•​Red, Green, Blue, and Alpha Palette Color Lookup Table Descriptors and Data included​

•​All Alpha Palette Color Lookup Table Data values (normalized) are either 0.0 or 1.0​

Figure QQ.1-6. Example 6​

QQ.1.7 Example 7 - Color Tissue / Velocity / Variance Mapping - Blending Considers Both​ Data Paths​

Each output value is a combination of colorized tissue intensity and a colorized flow/variance value determined by a 2-dimensional​ Secondary RGB Palette Color Lookup Table using the upper 5 bits of the FLOW_VELOCITY value and upper 3 bits of the​ FLOW_VARIANCE value to allow the use of 256-value Secondary Palette Color Lookup Tables. The blending proportion is based​ onvaluesfrombothdatapaths.IfthesumofthetwoRGBvaluesexceeds1.0,thevalueisclampedto1.0.Thecolorizedflow/variance​ value comes from a 2-dimensional Secondary RGB Palette Color LUT:​

•​Weight 1:​

•​Blending LUT 1 Transfer Function = ALPHA_1​

•​Weight 2:​

•​Blending LUT 2 Transfer Function = ALPHA_2​

•​Primary Palette Color Lookup Table​

•​RGB LUT Transfer Function = TABLE​

•​Alpha LUT Transfer Function = TABLE​

•​Red, Green, Blue, and Alpha Palette Color Lookup Table Descriptors and Data included​

•​Secondary Palette Color Lookup Table​

- Standard -​