Calibrate LDR to HDR response curve from samples





SfM Data File

Response file

Response file

Number of Brackets

Number of exposure brackets per HDR image (0 for automatic detection).

Automatic Nb Brackets

Number of exposure brackets used per HDR image. It is detected automatically from input Viewpoints metadata if “userNbBrackets” is 0, else it is equal to “userNbBrackets”.

Offset Ref Bracket Index

Zero to use the center bracket. +N to use a more exposed bracket or -N to use a less exposed backet.


Bypass HDR creation and use the medium bracket as the source for the next steps

Fusion Weight

Weight function used to fuse all LDR images together

Channel Quantization Power

Quantization level like 8 bits or 10 bits.

Highlights Correction

Pixels saturated in all input images have a partial information about their real luminance. We only know that the value should be >= to the standard hdr fusion. This parameter allows to perform a post-processing step to put saturated pixels to a constant value defined by the highlightsMaxLuminance parameter. This parameter is float to enable to weight this correction.

Highlight Target Luminance (Lux)

This is an arbitrary target value (in Lux) used to replace the unknown luminance value of the saturated pixels.

Storage Data Type

Storage image data type

Verbose Level

[‘fatal’, ‘error’, ‘warning’, ‘info’, ‘debug’, ‘trace’]

Output SfMData File

Path to the output sfmdata file