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The section half image logger (SHIL) takes digital images of the flat face of split cores using a line scan camera and generates RGB data. All 'Archive' section halves are imaged on the SHIL. Sediment cores are imaged as soon as possible after splitting and scraping to minimize color changes that occur through oxidation and drying. The SHIL can also be used to image the outside of a whole round hard rock section (see 360 section 360° Imaging 360imaging Hard Rock for details).

Theory of Operation

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SHIL system operation involves a number of processes, some performed only once upon initial installation, some only when lighting or camera equipment is replaced, and some on a routine basis at the beginning of each expedition or at the beginning of each batch of samples. The following procedures are covered in this manual:

• Installing and calibrating light array (see Light Array User Guide).
• Setting black and white saturation gain levels (see Maximum Dynamic Sensor Range).
• Setting color balance Author: Where is this covered?
• Making camera corrections (see Routine Camera Adjustments).
• Setting track velocity (see Track Speed Example).
• Adjusting knee slope, if needed (see Procedure: Iterative Adjustment).
• Performing QA/QC to confirm camera settings (see Quality Assurance/Quality Control).

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VCD-S: The SHIL can preserve a digital copy of the VCD-S that is printed out. If a scientist wants to keep a digital copy of the scratch sheet turn on the feature in "XXXXXXXX". Files are then written to C: data > in > VCD-S. These files are not uploaded to LORE and should be put in data1 at the end of the expedition. The files can be put on the server for scientist access to a convenient, shared location such as Uservol.

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360 Imaging Hard Rock

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The SHIL can be used to image the external surface of whole round hard rock cores in order to assemble a 360° composite image of the whole round. Oriented rock pieces are imaged after they have been binned and the structural scientist has marked the split lines on the pieces. Using the custom whole round scanning tray, the whole round core surface is imaged four times at the 0°, 90°, 180°, and 270° orientation from the splitting line.  The Imaging Specialist will download the images and assemble a composite image from the four scans and upload the composite separately.

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