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Smart Recut is a provides more sophisticated and customizable algorithm of customizable algorithms of finding controllably asymmetric recut solutions, superior to the ordinary Recut procedure.

Info

Currently Smart Recut is only working with round brilliants.

To initiate Smart Recut, do the following steps:

Panel
titleOn this page:

Table of Contents
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Running Smart Recut

Standalone Run

To run Smart Recut:

  1. Select Recut solution.

  2. Set Algorithm = your available Smart Recut algorithm.

  3. If necessary, set the algorithm options:
    1. Allow Girdle Extra Facets - see Using Girdle Extra Facets
    2. Fix Girdle, Fix Crown, Fix Pavilion - see Smart Recut with Restrictions
    3. Select Presets - see the Smart Recut Presets section below
    4. Target Cut grade and Symmetry grade

  4. Click Start Allocation.

    Open a model.
    Run simple Recut:
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    This is to provide a starting point for the Smart Recut algorithm.
    Select the simple recut solution on the Allocation solutions panel.

    Change the algorithm to Smart Recut, set other options according to your choice, and run it:
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    Info

    Smart Recut algorithm seeks to keep the table plane of the model unchanged , unless the solution found deviates from the original by a considerably wide margin. Besides that, Smart Recut is enabled with the options to fix the girdle, girdle + crown, or girdle + pavilion. See Smart Recut with Restrictions for more details.


    A set of new solutions appears.


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    (each with the "SR" marker in the Allocation column)
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    By default, Smart Recut produces 8 solutions, each according to

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  1. certain preset (see the definition in the Smart Recut Presets section below). The solution markers in the tree are color-coded to match the corresponding presets.

Recut and SmartRecut in One Run

The system provides the ability to apply Recut and Smart Recut algorithms sequentially within one run. To enable, select your Recut algorithm, then select the + Smart Recut option, then start allocation.

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With the + Smart Recut option, the SmartRecut will start automatically after the Recut, basing on the two best Recut solutions. In the solution list, you will obtain both recut and SmartRecut solutions.

Info

SmartRecut starts with the last selected options.

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Smart Recut Presets

A preset is A preset is a collection of additional limitations on top of the appraiser which are imposed on the solution. Each Smart Recut solution seeks a balance between retaining the most mass of the stone and achieving the highest possible symmetry. The presets, in effect, assign different weights to the geometrical requirements, thus shifting that balance to a varying extent. The presets are ordered from the strictest to the most relaxed. Below is the list of all presets:

  • Image RemovedImage Added1. UltraSymmetry UltraSym
  • Image RemovedImage Added2. HighOpticalSymmetryHighSym
  • Image RemovedImage Added3. MediumOpticalSymmetryMediumSym 
  • Image RemovedImage Added4. NormalOpticalSymmetryNormalSym 
  • Image RemovedImage Added5. Standard
  • Image RemovedImage Added6. ExtendedLimitsLowSym
  • Image RemovedImage Added7. LowOpticalSymmetryExtendedLimits
  • Image RemovedImage Added8. MaxMass MaxMass

Note

While comparing the Smart Recut solutions, keep in mind the following features:

  • The solutions, generally speaking, are not numbered in the same order as presets. In fact, the numbering of solutions is based on which preset finishes its job before the others.
  • Smart Recut algorithm is not fully deterministic and might give slightly different results on the same input data. The difference in mass does not exceed 0.0001 ct.
  • Though Smart Recut presets are designed to be uniformly distributed in the a certain range on the imaginary scale "higher symmetry - higher mass", the solutions are not guaranteed to behave in the same way. Occasionally a preset with stricter limitations might return a solution with lower symmetry.

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Expand
titleClick to see the examples

Consider these two sets of Smart Recut solutions together with their photorealistic images. Each set is obtained from one stone and ordered by decreasing mass.

First set (Smart_Recut_example_1.oxgz):

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Preset(13. Single-M)Mass
Preset

-
(Original stone)

Solution #

-769845231

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(Original stone13. Single-M)
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MaxMass

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LowOpticalSymmetry

LowSym

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ExtendedLimits

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Standard

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NormalOpticalSymmetry

NormalSym

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MediumOpticalSymmetry

MediumSym

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HighOpticalSymmetry

HighSym

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UltraSymmetry

UltraSym

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Mass4.39004.390010694.25964.25404.24934.23734.23394.22984.22744.20894.1069
Optical
symmetry		-8.222.474.665.296.667.767.476.678.938.22
Picture

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Second set (Smart_Recut_example_2.oxg):

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Preset

-
(Original stone)

-
(13. Single-M)

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MaxMass

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LowSym

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ExtendedLimits

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Standard

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NormalSym

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MediumSym

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HighSym

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UltraSym

Mass1.12691.0952
Solution #-769845231
Preset

-
(Original stone)

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MaxMass
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LowOpticalSymmetry
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ExtendedLimits
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Standard
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NormalOpticalSymmetry
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MediumOpticalSymmetry
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HighOpticalSymmetry
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UltraSymmetry
-
(13. Single-M)
Mass1.12691.12241.12211.12161.12061.12011.11871.11631.11261.0952
Optical
symmetry		-9.134.635.636.025.956.157.327.869.059.13
Picture

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Info
To obtain a photorealistic view of the stone, click Photoreal in the main menu. The main view field will be split in two, with the photorealistic view in the lower half. Note that in this mode you may still operate the Plans & Scans panel. As you select other models, the photorealistic image would change accordingly.

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To view and edit presets, open the the Appraiser editor panel  panel (see see My Appraiser), then click the the Show presets button button.

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The limitations are defined with respect to those of MyAppraiser. Each parameter within each preset is described by two numbers. These are the multipliers for the left and right border, correspondingly. If both numbers are 1, this means that both borders are unchanged, that is, MyAppraiser values are used.

Sweetline is a derived parameter with special meaning; see Using SweetLine for  for more details.

Blue  Blue background denotes the selected field, if any. The name of the preset and the side (Min or  or Max) corresponding to the selected field are repeated in bold at the table header. Selection can be moved around using the arrow keys.

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 Hyphen on gray background denotes the positions where the corresponding limit is physically impossible to overstep, and thus need not be enforced specifically (lower limit of 0 for the culet size, for example). Such positions are not accessible for editing and can't be selected. When the selection is moved around with arrow keys, it jumps over them.

Image Modified Yellow  Yellow background denotes the multipliers which are loosening the MyAppraiser limitations, that is, left-border multipliers with value less than 1 and right-border multipliers with value greater than 1.

All numeric values are editable. Double-clicking in any table cell transforms it to the input field: Image Modified. Pressing Pressing Enter does  does the same to the selected cell. You may change the field using the arrow keys keys Up/Down on  on the keyboard, or the arrow buttons next to the field, or simply by typing the values in. Pressing Pressing Esc finishes  finishes the editing and discards changes. Pressing Pressing Enter or  or clicking in another cell finishes the editing and keeps the newly entered value in the edited cell.

Changed values are shown in bold. The presence of such values is further indicated by the bold note note Unsaved changes at  at the bottom of the panel.

Life cycle of the edited parameters is controlled by the following buttons at the bottom of the panel:

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Warning

These buttons are not to be confused with the similar buttons controlling the MyAppraiser parameters (see My Appraiser).

Undo Image Modified
Undo the most recent change, if any.
Redo Image Modified
Redo the recently undone change, if any.
DiscardDiscard the recent edits.
ApplySave the parameters within the program, so from that point on the new values would be applied to all models.

The parameters are stored in *.ini files located at at %USERPROFILE%\OctoNus Software\SmartRecutPresets\. No mechanism for managing multiple versions of presets is provided. If you want to return to the default values, copy the files manually beforehand and save them elsewhere.

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