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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 | 428x | import type { Types } from '@cornerstonejs/core';
import { Enums } from '@cornerstonejs/core';
/**
* Helper function to sum scalar data over specified dimension groups.
*/
function sumOverDimensionGroups(voxelManager, dimensionGroups) {
const arrayLength = voxelManager.getScalarDataLength();
const resultArray = new Float32Array(arrayLength);
for (const dimensionGroupNumber of dimensionGroups) {
const scalarData =
voxelManager.getDimensionGroupScalarData(dimensionGroupNumber);
for (let i = 0; i < arrayLength; i++) {
resultArray[i] += scalarData[i];
}
}
return resultArray;
}
/**
* Helper function to average scalar data over specified dimension groups.
*/
function averageOverDimensionGroups(voxelManager, dimensionGroups) {
const sumArray = sumOverDimensionGroups(voxelManager, dimensionGroups);
const numDimensionGroups = dimensionGroups.length;
for (let i = 0; i < sumArray.length; i++) {
sumArray[i] /= numDimensionGroups;
}
return sumArray;
}
const operationFunctions = {
[Enums.GenerateImageType.SUM]: (voxelManager, dimensionGroups, callback) => {
const resultArray = sumOverDimensionGroups(voxelManager, dimensionGroups);
for (let i = 0; i < resultArray.length; i++) {
callback(i, resultArray[i]);
}
},
[Enums.GenerateImageType.AVERAGE]: (
voxelManager,
dimensionGroups,
callback
) => {
const resultArray = averageOverDimensionGroups(
voxelManager,
dimensionGroups
);
for (let i = 0; i < resultArray.length; i++) {
callback(i, resultArray[i]);
}
},
[Enums.GenerateImageType.SUBTRACT]: (
voxelManager,
dimensionGroups,
callback
) => {
if (dimensionGroups.length !== 2) {
throw new Error(
'Please provide only 2 dimension groups for subtraction.'
);
}
const arrayLength = voxelManager.getScalarDataLength();
const scalarData1 = voxelManager.getDimensionGroupScalarData(
dimensionGroups[0]
);
const scalarData2 = voxelManager.getDimensionGroupScalarData(
dimensionGroups[1]
);
for (let i = 0; i < arrayLength; i++) {
const difference = scalarData1[i] - scalarData2[i];
callback(i, difference);
}
},
};
/**
* Generates an array of scalar data for a series of dimension groups from a 4D volume,
* performing AVERAGE, SUM or SUBTRACT operations.
*
* @param dynamicVolume - volume to compute dimension group data from
* @param operation - operation to perform on dimension group data, operations include
* SUM, AVERAGE, and SUBTRACT (can only be used with 2 dimension groups provided)
* @param options - additional options for the operation
* @param options.dimensionGroupNumbers - an array of dimension group numbers to perform the operation on (1-based),
* if left empty, all dimension groups will be used
* @param options.frameNumbers - @deprecated Use dimensionGroupNumbers instead
* @returns {Float32Array} The resulting array after performing the operation
* @throws {Error} If the operation is not supported or if invalid dimension group numbers are provided
*/
function generateImageFromTimeData(
dynamicVolume: Types.IDynamicImageVolume,
operation: Enums.GenerateImageType,
options: {
dimensionGroupNumbers?: number[];
frameNumbers?: number[];
}
): Float32Array {
const { dimensionGroupNumbers, frameNumbers } = options;
if (frameNumbers) {
console.warn(
'Warning: frameNumbers parameter is deprecated. Please use dimensionGroupNumbers instead.'
);
}
// Create array of dimension group numbers (1-based) if not provided
const dimensionGroups =
dimensionGroupNumbers ||
frameNumbers ||
Array.from({ length: dynamicVolume.numDimensionGroups }, (_, i) => i + 1);
if (dimensionGroups.length <= 1) {
throw new Error('Please provide two or more dimension groups');
}
const voxelManager = dynamicVolume.voxelManager;
const arrayLength = voxelManager.getScalarDataLength();
const operationFunction = operationFunctions[operation];
if (!operationFunction) {
throw new Error(`Unsupported operation: ${operation}`);
}
const resultArray = new Float32Array(arrayLength);
operationFunction(voxelManager, dimensionGroups, (index, value) => {
resultArray[index] = value;
});
return resultArray;
}
/**
* Updates the scalar data for a target volume based on a series of dimension groups
* from a 4D volume, performing AVERAGE, SUM or SUBTRACT operations.
*
* @param dynamicVolume - volume to compute dimension group data from
* @param operation - operation to perform on dimension group data, operations include
* SUM, AVERAGE, and SUBTRACT (can only be used with 2 dimension groups provided)
* @param options - additional options for the operation
* @param options.dimensionGroupNumbers - an array of dimension group numbers to perform the operation on (1-based),
* if left empty, all dimension groups will be used
* @param options.frameNumbers - @deprecated Use dimensionGroupNumbers instead
* @param options.targetVolume - the volume to update with the result of the operation
* @throws {Error} If no target volume is provided or if the operation is not supported
*/
function updateVolumeFromTimeData(
dynamicVolume: Types.IDynamicImageVolume,
operation: Enums.GenerateImageType,
options: {
dimensionGroupNumbers?: number[];
frameNumbers?: number[];
targetVolume: Types.IImageVolume;
}
): void {
const { dimensionGroupNumbers, frameNumbers, targetVolume } = options;
if (!targetVolume) {
throw new Error('A target volume must be provided');
}
if (frameNumbers) {
console.warn(
'Warning: frameNumbers parameter is deprecated. Please use dimensionGroupNumbers instead.'
);
}
// Create array of dimension group numbers (1-based) if not provided
const dimensionGroups =
dimensionGroupNumbers ||
frameNumbers ||
Array.from({ length: dynamicVolume.numDimensionGroups }, (_, i) => i + 1);
if (dimensionGroups.length <= 1) {
throw new Error('Please provide two or more dimension groups');
}
const voxelManager = dynamicVolume.voxelManager;
const targetVoxelManager = targetVolume.voxelManager;
const operationFunction = operationFunctions[operation];
if (!operationFunction) {
throw new Error(`Unsupported operation: ${operation}`);
}
operationFunction(voxelManager, dimensionGroups, (index, value) => {
targetVoxelManager.setAtIndex(index, value);
});
// Update the modified slices in the target volume
targetVoxelManager.resetModifiedSlices();
for (let k = 0; k < targetVolume.dimensions[2]; k++) {
targetVoxelManager.modifiedSlices.add(k);
}
}
export { generateImageFromTimeData, updateVolumeFromTimeData };
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