 
            This function calculates lpDICOMDisplaySettings->VOIWindow from image's min and max values, and then builds grayscale LUT according to lpDICOMDisplaySettings.
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AT_ERRCOUNT ACCUAPI MED_display_grayscale_LUT_build_auto_double(
        HIGEAR hIGear,
        const AT_RECT* lpRect,
        AT_MED_DCM_DISPLAY_SETTINGS_DOUBLE* lpDICOMDisplaySettings,
        HIGLUT hlut
);
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| Name | Type | Description | 
|---|---|---|
| hIGear | HIGEAR | 16g image having its 16x8 LUT updated. | 
| lpRect | const AT_RECT* | AT_RECT structure. | 
| lpDICOMDisplaySettings | AT_MED_DCM_DISPLAY_SETTINGS_DOUBLE* | AT_MED_DCM_DISPLAY_SETTINGS_DOUBLE structure. | 
| hlut | HIGLUT | LUT handle. | 
Returns the number of ImageGear errors that occurred during the function call.
Grayscale – 8…32 bpp.