1.0 Using this Document
This document has two objectives: (1) To acquaint you with PhotoGrav so you canbe productively using the program as rapidly as possible and (2) To serve as acomplete reference source for all of PhotoGrav's components and operationalcharacteristics.
To satisfy the first objective, chapters 1 and 2 have been written to presentessential information and concepts in as concise a manner as possible. Chapter 1provides the information necessary to install PhotoGrav and to begin using italmost immediately. A series of logically-connected scenarios, with screenshots, provides immediate hands-on experience and should give you a good idea ofPhotoGrav's basic operational characteristics. Chapter 2 presents an overview ofthe flow of events within PhotoGrav, discusses some basic PhotoGrav concepts andrationale, and presents a summary of important information that you should knowabout the program.
The remainder of the chapters, especially chapters 3 and 4, provides a detailedreference source for all of PhotoGrav's features. Chapters 3 and 4 presentdetailed descriptions of PhotoGrav's Primary and Support windows, respectively.Chapter 5 describes how to use the program's Help capability and Chapter 6explains what to do if you have any difficulties in using PhotoGrav. TheAppendices present supplemental information in specialized areas.
At a minimum, after installing the program, you should read Sec. 1.4 and stepthrough the scenario presented in that section. You should also definitely readSec. 2.3, ImportantPhotoGravInformation. Preferably, to really understand andfully use PhotoGrav's extensive capabilities, you should read Chapters 1 and 2in their entirety.
1.1 System Requirements
To use PhotoGrav, you need the following hardware and software:
Notes on Hardware Requirements:
PhotoGrav itself requires less than 30 MB of hard disk space for program anddata files. However, several temporary disk files are created during PhotoGravexecution on the disk where you installed PhotoGrav. These files are used astemporary storage for some of the images which are generated during execution.The sizes of these temporary files are proportional to the size of the digitizedphoto which is to be engraved and thus the required hard disk space is a “soft”number which depends on your operational scenario. All PhotoGrav temporary filesare deleted when PhotoGrav terminates execution.
1.2 Preliminaries
PhotoGravrequires that your computer monitor be set up to display a pixel depthof at least 32 bits per pixel. It is also desirable that the display resolution(desktop area) be set to at least 1024 x 768, but it is recommended to be set ata larger size.
1.3 Installation / Setup
The installation process will create an icon for PhotoGrav and place that onyour desktop as a shortcut and will also create a new Program Group under'PhotoGrav'. In all cases, the installation process will also create an Uninstallicon that allows you to easily remove PhotoGrav from your system. You mayalso use the “Add/Remove Programs” capability in the ControlPanel to uninstall the program.
1.4 PhotoGrav Activation System and Licensing
When PhotoGrav is launched it checks to see if the software has been activatedand authenticated for full use. PhotoGrav will permit full usage with anactivation reminder up to 15 days from initial installation in order to giveadequate time for the user to activate the software. No registration is requiredto activate the software and no personal information is transmitted across theinternet.
PhotoGrav Licensing and Activation System permits activations on two separatecomputer machines and reactivation as many times as needed. This policy allowsPhotoGrav to be installed on any combination of two computers such asoffice/laptop, home/office, machine/office, etc.
There are four different methods of activation provided to conveniently assistin activating the PhotoGrav software product. These four methods of activationare via the Web, Email, Postal Mail, and Phone (see Fig. 1.4.1). The quickestmethod to activate the PhotoGrav software, assuming efficient internetcapabilities, is to use the online PhotoGravActivationSystem (see Fig. 1.4.2).
To activate the software and display the activation screen in Fig 1.4.1, openPhotoGrav and click Help→ActivatePhotoGrav on the main menu bar. If an activeinternet connection is available then it is suggested to click the GetActivation Key (Web)… button for the quickest way to activate the software. Ifyou prefer to use email then simply click on the Get Activation Key (Email)…button and on most computers your default email client will pop up and be filledin with the appropriate information. If the computer system is configured insuch a way that the relevant information is already filled in then just clickthe Send button to send an activation request email and allow 24 hours for theActivation Key to be emailed back to the sending email address. The third methodis to call ImageLaz Sales Dept and we will be happy to provide an ActivationKey. The fourth and most inefficient method of activation is to send anactivation request via postal mail to ImageLaz with the appropriate informationand wait for the Activation Key to be sent back.
1.5 Quick Start Scenarios
This section provides a “Quick Start” to using PhotoGrav by presenting a simple,but typical, engraving scenario. It introduces PhotoGrav’s major features andcontrols and how they are used within the context of an actual engravingscenario. To successfully use this section you should have a basic understandingof Windows features and techniques. If you’re anxious to try PhotoGrav and youdon’t like to read, then this section is for you. However, even if you consideryourself a PhotoGrav expert after completing this section, it is highlyrecommended that you step through the additional scenarios in Section 1.6 andthen read Chapter 2 for a more complete understanding of how PhotoGrav works.
There are several definitions that one should have firmly in mind beforetackling the Quick Start scenario. These definitions are listed below:
- About file types supported by PhotoGrav. File.org aims to be the go-to resource for file type- and related software information. We spend countless hours researching various file formats and software that can open, convert, create or otherwise work with those files.
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- Installing PhotoGrav 3.0.3 (without internet connection) - Computers that do NOT have an internet connection will need to find the file with the name photograv.exe and replace it with Photograv 3.0.3. A backup of this file is recommended. Changing Languages - Find the files with the names photograv.exe and pgdg.dll and replace them with.
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| Original Image (Gray or Color) | The image, in jpg, tif, png or bmp format,that is the input image to PhotoGrav. This image is the digitizedphotograph (either in color or grayscale) that you want to engrave. |
| Engraved Image(Binary) | This is the processed image that PhotoGravproduces that should be sent to your laser engraver. This image isa binary image (black & white) and can be saved in either tif, png, orbmp format. |
| Simulation Image | This is a simulation, produced byPhotoGrav, of what the engraved image will look like when engraved onthe selected engraving material. This image is a 24-bit, true colorimage and can be saved in either jpg, tif, png or bmp format. This imageis useful for customer proofs and for reference BUT is NOT the image tobe sent to the laser engraver. |
Scenario 1: Engrave a man’s photograph on cherry wood.
It is assumed that the man’s photograph has been previously digitized and storedas either a color or grayshaded image (in one of the supported image formats) ondisk. This scenario will use the image “Image250.bmp” which has been furnishedwith PhotoGrav. This image should reside in the directory C:[PhotoGravInstallation Directory]SAMPLES.
Note: The image “Image250.bmp” has a dpi of 250. In general, the ratio ofengraver dpi to image dpi should be an integer factor. So if your engraver hasdpi’s like 150, 300, 600, . . , then in the following scenario you should usethe image “Image300.dpi” which has a dpi of 300.
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1.6 Additional Tutorial Scenarios
This section presents five additional scenarios which further illustratePhotoGrav’s features. Each scenario is a logical follow-on to Scenario 1presented in the preceding section.
Scenario 2: Compare the original, grayscale, engraved, & simulatedimages.
This scenario will demonstrate how easy it is to evaluate the engraved (binary)image by comparing it and the simulated engraving to the original (input) orgrayscale image. The scenario will also demonstrate some of PhotoGrav’ssupporting features. PhotoGrav has a “Split Screen”feature which can be used to more efficiently compare the various images (i.e.grayscale vs. simulated).
Scenario 3: Generating a PhotoGrav Session Information Report
This scenario will demonstrate how to generate a PhotoGrav Session InformationReport that completely describes the current engraving session. The scenariowill also demonstrate several other PhotoGrav features.
Scenario 4: Adjusting Parameters in the “Interactive Mode”Panel.
This scenario will demonstrate how to adjust the parameters used in creating theengraved and simulation images. The Interactive Mode panel is extremelypowerful, but also a little complicated so this scenario will just demonstratesome, not all, of the features available when Interactive Mode is selected. Thisscenario will also demonstrate how to export the Parameters.
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These parameters have been optimized specifically for Boss Laser cutters. Of course if you have a unique material that you want to process an image on - don't hesitate to call us and let us help you process a sample.
PhotoGraV automatically 'stretches' an image's grayshades over the entire grayshade range but also provides user-controlled adjustment of clipping and gamma parameters and histogram equalization in the interactive mode. PhotoGraV applies a simultaneous smoothing and edge strengthening to the image. Parameters controlling this process are user-adjustable in the interactive mode. (4) PhotoGraV combines the enhanced image with the dithered image before thresholding the result. In interactive mode, the relative image weights and thresholding parameters are totally user adjustable. To our knowledge, PhotoGraV is the only graphics program that combines the adjustable error-diffused image with the enhanced image before thresholding the result. (5) For automatic processing, all of PhotoGraV's parameters have been tuned and optimized for each of the engraving materials supported by PhotoGraV.
In summary, compared to general-purpose graphics programs, PhotoGraV has been designed specifically for laser engraving photographs and consequently results in a much more efficient and reliable process than that obtainable by the general-purpose programs. Do you provide any instructions on how to use the program? The PhotoGraV program is accompanied by an extensive User Guide that provides installation instructions, scenarios to assist you in learning the program, and complete descriptions of all of PhotoGraV's functions and controls. In addition, appendices provide additional information including tips for engraving and finishing photos on various common materials. What if I encounter difficulties in using PhotoGrav? We provide one full year of Technical Support that is available via email, FAX, or phone. We want you to be successful in using PhotoGraV and we will expend considerable effort to ensure your success.
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The power tool for laser engraving photographs! PhotoGrav has been designed specifically for Laser Engravers. The objective of the program is to efficiently process scanned photographs so that they can be engraved on a variety of common materials with confidence that the engraved photographs will be of superb quality. Traditionally, the engraving of photographs has been difficult and has been a hit or miss endeavor resulting in many discarded products.
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Click the Resize Image button, and the pop-up screen will appear for the size and resolution. Enter the size you want the image to be scaled to for engraving. To fit my 5x7 maple wood shape, let’s use a width of 4 inches. PhotoGrav will automatically scale the height of the image to keep it proportional. When setting the resolution, keep in mind the brand of laser system you have. If your laser works in 250/500/1000 dpi ratios, choose a setting of 500 dpi. When your laser works in 300/600/1200 dpi ratios, choose a setting of 600 dpi in this screen.
PhotoGraV's processing functions have been tuned and optimized for each of these materials and the appropriate optimized parameters are automatically loaded whenever a new material is selected. PhotoGraV automatically compensates for the engraving peculiarities of each material in the process of creating the 'engraver-ready' processed image. Photograv free trial. Now shipping version 3.1 (with video tutorial) PhotoGraV - The Power Tool for Laser Engraving Photographs! PhotoGraV has been designed specifically for Laser Engravers. The objective of the program is to efficiently process scanned photographs so that they can be engraved on a variety of common materials with confidence that the engraved photographs will be of superb quality. Currently we do not have a direct download link available for PhotoGrav. Our team is constantly working on adding more downloads to the site. Clicking the download link will search for the PhotoGrav download on Bing. Find the official PhotoGrav download on Bing. PhotoGraV, Free Download by Schrock's Computer Works. Photo Brush is designed to help you edit digital photos and enhance images. Photograv trial Just wondering if there was a trial version of photograv out there. I am very new to laser engraving and would like to try it out before I invest more money. Also you will be able to explore the alternatives which have been supplied free by members of the community. Attached Images. Search.jpg (24.7 KB, 43 views).
With the proper material and with a little experimentation to determine the best speed & power settings for your machine, you can get superb engraving of photos on black granite. LaserTile - The 'White/Black IPI Laser Plastic - #LZ902' material was used as the background for this named parameter set so that material will be the one that appears to be selected but the parameters have been set for LaserTiles. For a 50 watt machine, the suggested initial settings are Speed = 50%, Power = 100% at 300 dpi.
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Black Granite - The parameters for black granite have been compiled using input from engravers around the country who engrave a lot of photos on black granite. For a 50 watt machine, the suggested intial settings are Speed = 80%, Power = 16% at 600 dpi. For 500 dpi, the suggested initial settings are Speed = 80% and Power = 19%. Black granite is a difficult material for engraving photos and selection of the proper material is quite important. One should try to get granite that is as black as possible and which has as little 'flecking' as possible in the material.