2.80:Infer Grid (Table Extract Method) - Revision history

Dgreenwood at 15:09, 5 August 2025

2025-08-05T15:09:17Z

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Dgreenwood at 15:56, 29 December 2023

2023-12-29T15:56:24Z

← Older revision		Revision as of 10:56, 29 December 2023
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			{\|cellpadding=10 cellspacing=5 style="margin:12px"
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			\|style="font-size:200%; background-color:#662d91; color:white; width:28px; text-align:center"\|'''‼'''
			\|style="border: 4px solid #662d91"\|
			'''LEGACY TECHNOLOGY DETECTED!!'''

			'''''Infer Grid''''' was replaced by '''''Grid Layout''''' in version 2021.
			* Their logic and setup is largely the same, with '''''Grid Layout''''' being an improved version of '''''Infer Grid'''''.
			* Visit the '''''[[Grid Layout]]''''' article for more information.
			\|}
	[[image:1560961400530-989.png\|frame]]		[[image:1560961400530-989.png\|frame]]

	~~<onlyinclude>~~
	<blockquote style="font-size:14pt>		<blockquote style="font-size:14pt>
	''Infer Grid'' is one of three [[Table Extraction]] methods to extract data from tables on documents. It uses the positional location of row and column headers to interpret where a tabular grid would be around each value in a table and extract values from each cell in the interpreted grid.		''Infer Grid'' is one of three [[Table Extraction]] methods to extract data from tables on documents. It uses the positional location of row and column headers to interpret where a tabular grid would be around each value in a table and extract values from each cell in the interpreted grid.
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	Furthermore, if table line positions can be obtained from a Line Detection or Line Removal '''IP Command''', only the '''''X Axis Extractor''''' is needed. In these cases, the '''''X Axis Extractor''''' can be used to find the column header labels, and the grid will be created using the table lines in the documents [[Layout Data]]. The raw text data obtained from the '''[[Recognize]]''' activity will populate each cell of the grid according to where it is on the page.		Furthermore, if table line positions can be obtained from a Line Detection or Line Removal '''IP Command''', only the '''''X Axis Extractor''''' is needed. In these cases, the '''''X Axis Extractor''''' can be used to find the column header labels, and the grid will be created using the table lines in the documents [[Layout Data]]. The raw text data obtained from the '''[[Recognize]]''' activity will populate each cell of the grid according to where it is on the page.
	~~</onlyinclude>~~

	== Use Cases ==		== Use Cases ==

Dgreenwood: Dgreenwood moved page Infer Grid (Table Extract Method) - 2.80 to 2.80:Infer Grid (Table Extract Method) without leaving a redirect

2023-12-29T15:54:01Z

Dgreenwood moved page Infer Grid (Table Extract Method) - 2.80 to 2.80:Infer Grid (Table Extract Method) without leaving a redirect

← Older revision	Revision as of 10:54, 29 December 2023
(No difference)

Randallkinard: /* Configure Infer Grid for OMR Checkboxes */

2023-11-01T15:48:35Z

Configure Infer Grid for OMR Checkboxes

← Older revision		Revision as of 10:48, 1 November 2023
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	The first step when configuring Infer Grid for any table is to configure the Axis Extractors. These are extractors written to locate the column and row header label locations. Once these locations are known, infer grid can interpret a grid structure where it expects to find each cell in the table.		The first step when configuring Infer Grid for any table is to configure the Axis Extractors. These are extractors written to locate the column and row header label locations. Once these locations are known, infer grid can interpret a grid structure where it expects to find each cell in the table.

	For our document, our table uses lines to divide its rows and columns into bounded cells. Because of this, we can get away with only using a single axis. We will use the "Y Axis Extractor" property to locate the headers "Description", "Farm", and "Simulator".		For our document, our table uses lines to divide its rows and columns into bounded cells. Because of this, we can get away with only using a single axis. We will use the "X Axis Extractor" property to locate the headers "Description", "Farm", and "Simulator".

Dgreenwood at 22:02, 9 December 2022

2022-12-09T22:02:11Z

← Older revision		Revision as of 17:02, 9 December 2022
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	</tab>		</tab>
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			[[Category:Articles]]
			[[Category:Version 2.80]]

Dgreenwood: Dgreenwood moved page Infer Grid (Table Extract Method) to Infer Grid (Table Extract Method) - 2.80: To be consistent with current naming conventions

2022-12-09T22:01:37Z

Dgreenwood moved page Infer Grid (Table Extract Method) to Infer Grid (Table Extract Method) - 2.80: To be consistent with current naming conventions

← Older revision	Revision as of 17:01, 9 December 2022
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Dgreenwood at 17:41, 24 November 2020

2020-11-24T17:41:13Z

← Older revision		Revision as of 12:41, 24 November 2020
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	<onlyinclude>		<onlyinclude>
	<blockquote style="font-size:14pt>		<blockquote style="font-size:14pt>
	'''Infer Grid''' is one of three [[Table Extraction]] methods to extract data from tables on documents. It uses the positional location of row and column headers to interpret where a ~~tabluar~~ grid would be around each value in a table and extract values from each cell in the interpreted grid.		''Infer Grid'' is one of three [[Table Extraction]] methods to extract data from tables on documents. It uses the positional location of row and column headers to interpret where a tabular grid would be around each value in a table and extract values from each cell in the interpreted grid.
	</blockquote>		</blockquote>

Dgreenwood at 17:40, 24 November 2020

2020-11-24T17:40:54Z

← Older revision		Revision as of 12:40, 24 November 2020
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	[[image:1560961400530-989.png\|frame]]		[[image:1560961400530-989.png\|frame]]

			<onlyinclude>
	<blockquote style="font-size:14pt>		<blockquote style="font-size:14pt>
	'''Infer Grid''' is one of three methods to extract data from tables on documents. It uses the positional location of row and column headers to interpret where a tabluar grid would be around each value in a table and extract values from each cell in the interpreted grid.		'''Infer Grid''' is one of three [[Table Extraction]] methods to extract data from tables on documents. It uses the positional location of row and column headers to interpret where a tabluar grid would be around each value in a table and extract values from each cell in the interpreted grid.
	</blockquote>		</blockquote>

	This method extracts information by inferring a grid from the header positions. This is done by assigning an "X Axis Extractor" to match the column headers and, a "Y Axis Extractor" to match row headers. A grid is created from the header positions extracted from the two extractors. Furthermore, if table line positions can be obtained from a Line Detection or Line Removal IP Command, only the X Axis Extractor is needed. In these cases, the X Axis Extractor can be used to find the column header labels, and the grid will be created using the table lines in the documents [[Layout Data]]. The raw text data obtained from the [[Recognize]] activity will populate each cell of the grid according to where it is on the page.		This method extracts information by inferring a grid from the row and column header positions. This is done by assigning an '''''X Axis Extractor''''' to match the column headers and, a '''''Y Axis Extractor''''' to match row headers. A grid is created from the header positions extracted from the two extractors.

			Furthermore, if table line positions can be obtained from a Line Detection or Line Removal '''IP Command''', only the '''''X Axis Extractor''''' is needed. In these cases, the '''''X Axis Extractor''''' can be used to find the column header labels, and the grid will be created using the table lines in the documents [[Layout Data]]. The raw text data obtained from the '''[[Recognize]]''' activity will populate each cell of the grid according to where it is on the page.
			</onlyinclude>

	== Use Cases ==		== Use Cases ==

Dgreenwood: /* OMR Checkboxes */

2020-08-28T16:23:40Z

OMR Checkboxes

← Older revision		Revision as of 11:23, 28 August 2020
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	{\|style="margin:auto"		{\|style="margin:auto"
	\|+Marking the "Farm" and "Simulator" columns as OMR Columns in the Infer Grid Property Panel will return a value of "True" if the box is checked and "False" if it is blank.		\|Marking the "Farm" and "Simulator" columns as OMR Columns in the Infer Grid Property Panel will return a value of "True" if the box is checked and "False" if it is blank.
			\|-
			\|
	[[file:infer grid omr.png\|center]]		[[file:infer grid omr.png\|center]]
	\|}		\|}

Mharrison: Added links to Layout Data article.

2020-03-24T14:23:15Z

Added links to Layout Data article.

← Older revision		Revision as of 09:23, 24 March 2020
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	</blockquote>		</blockquote>

	This method extracts information by inferring a grid from the header positions. This is done by assigning an "X Axis Extractor" to match the column headers and, a "Y Axis Extractor" to match row headers. A grid is created from the header positions extracted from the two extractors. Furthermore, if table line positions can be obtained from a Line Detection or Line Removal IP Command, only the X Axis Extractor is needed. In these cases, the X Axis Extractor can be used to find the column header labels, and the grid will be created using the table lines in the documents ~~layout data~~. The raw text data obtained from the [[Recognize]] activity will populate each cell of the grid according to where it is on the page.		This method extracts information by inferring a grid from the header positions. This is done by assigning an "X Axis Extractor" to match the column headers and, a "Y Axis Extractor" to match row headers. A grid is created from the header positions extracted from the two extractors. Furthermore, if table line positions can be obtained from a Line Detection or Line Removal IP Command, only the X Axis Extractor is needed. In these cases, the X Axis Extractor can be used to find the column header labels, and the grid will be created using the table lines in the documents [[Layout Data]]. The raw text data obtained from the [[Recognize]] activity will populate each cell of the grid according to where it is on the page.


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	OMR stands for "Optical Mark Recognition". It is a a way to determine if a checkbox is marked or not on a document. If you think back to your grade school days and remember taking tests and filling in bubbles on an answer sheet, you already have experience with OMR! Those answer sheets are fed through a machine that reads the "checkbox state" of the boxes, either filled in (checked) or not. There are many examples of current documents where checkboxes are used to record a boolean response ("true or false" or "yes or no"), a multiple choice response, or other information. Grooper uses OMR to read those checkbox states.		OMR stands for "Optical Mark Recognition". It is a a way to determine if a checkbox is marked or not on a document. If you think back to your grade school days and remember taking tests and filling in bubbles on an answer sheet, you already have experience with OMR! Those answer sheets are fed through a machine that reads the "checkbox state" of the boxes, either filled in (checked) or not. There are many examples of current documents where checkboxes are used to record a boolean response ("true or false" or "yes or no"), a multiple choice response, or other information. Grooper uses OMR to read those checkbox states.

	The Infer Grid method is the easiest way to read checkbox states inside a table. Once the table's structure is found using the axis extractors, you can choose which columns contain checkboxes. Grooper will use ~~layout data~~ obtained from a Box Detection or Box Removal IP Command to determine if the box is filled in or left blank. Refer to the [[Infer Grid (Table Extract Method)#Configure Infer Grid for OMR Checkboxes\|tutorial below]] for more information on how to configure this use.		The Infer Grid method is the easiest way to read checkbox states inside a table. Once the table's structure is found using the axis extractors, you can choose which columns contain checkboxes. Grooper will use [[Layout Data]] obtained from a Box Detection or Box Removal IP Command to determine if the box is filled in or left blank. Refer to the [[Infer Grid (Table Extract Method)#Configure Infer Grid for OMR Checkboxes\|tutorial below]] for more information on how to configure this use.

	{\|style="margin:auto"		{\|style="margin:auto"
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	==== Obtain the Document's Layout Data ====		==== Obtain the Document's Layout Data ====

	This method heavily relies on ~~layout data~~ in order to work. Before we can use Infer Grid to extract this table's information, we need to know the table's line positions and checkbox states.		This method heavily relies on [[Layout Data]] in order to work. Before we can use Infer Grid to extract this table's information, we need to know the table's line positions and checkbox states.

	That means we will need to do some image processing using the following IP Commands		That means we will need to do some image processing using the following IP Commands
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	For each cell in the selected columns, Infer Grid will look at the ~~layout data~~ obtained by a Box Detection or Box Removal IP Command to see if a mark was detected for the box. If a mark was detected, that means the box is checked and it is assigned the value "True". If not, that cell is assigned the value "False".		For each cell in the selected columns, Infer Grid will look at the [[Layout Data]] obtained by a Box Detection or Box Removal IP Command to see if a mark was detected for the box. If a mark was detected, that means the box is checked and it is assigned the value "True". If not, that cell is assigned the value "False".

	Press the "Test Extraction" button to see our results.		Press the "Test Extraction" button to see our results.