Schematic - how to - with IrfanView 3.91

ID: 27811
Schematic - how to - with IrfanView 3.91 
12.Jul.04 08:37
8631

Franz-Josef Haffner (D)
Articles: 618
Count of Thanks: 22
Franz-Josef Haffner

 

For newer versions, look here

you can download IrvanView for free from this url:

http://www.irfanview.com/

english language is always included. The file size is less than 1 MB.  

IrvanView is a very simple und uncomplex software, but it contains enough features for schematic editing.

 

Scanning:

You have to place the original in straight direction, because IrfanView not offers the possibility to turn the document in fine steps.

The settings for scanning are:

8-Bit greyscale, 300 dpi

every action can be reversed by the Edit menu's Undo command

 

Crop the border:

To crop the border, use the left mouse button to outline the area (selection), click on the Edit menu, then Crop. The area outside the outline will be thrown away, only the inside will be left.

 

Sharpening and cleaning the background:

Click on the Image menu, then Enhance colors. A dialog appears with a slider controls. Move the setting up or down, for more or less brightness / contrast /gamma.

We want to get a white and clean background and good readable lines and terms.

 

Resizing:

In most cases, you can save filesize by reducing the image without loosing the readability.

 

 

Decreasing the greyscales:

Click on the Image menu, then select Decrease Color Depth.  A dialog shows the possible color depths. Select custom – 6 colors. Please do not use: Floyd-Steinberg dithering.

 

The image is ready now to save. You choose png format with the default values


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 2
Schematic - how to - with IrfanView 3.91 
04.Sep.22 10:22
8631 from 9421

Ross Rian (USA)

Hi! Irfanview was a very easy program to navigate and i was able to resize pictures of schematics in a snap! Thank-you for this post! It was VERY helpful AND informative! Regards, Ross

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 3
Schematic - how to - with actual IrfanView 
04.Sep.22 14:30
8654 from 9421

Heribert Jung (D)
Editor
Articles: 1000

There are a number of updates for the schema handling by Irfanview.
The attached PDF is from August 2018, I hope it is the latest update.

Heribert Jung

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