BOB STEPHEN TEST POST

i Newspaper - scan of ad and some of bike results

 

NOTES

Since the work below I investigated some page layout options. If images to the side are selected this seems a good option (rather than images on top or images below). In addition if custom is selected then images can be dropped into the text and aligned as wished (right, center, left). When this is done anchor the cursor in the text and use the add button at the top of the page. Once the image(s) are embedded in the text one can go and use the bulk alignment options and they will stay there (independent of those in the gallery at the bottom of the page). If any embedded images are repeated in the page gallery after insertion those can simply be deleted.  Note that embedded images do not have a magnifier which will reduce their utility if displaying text and line drawings. Bob S 04/08/19.

A single red coloured image has been added which was created in GIMP and made to be 1000 x 1000 pixels. This image is rescaled to 681 x 681 by the software when displayed on the screen in the post.

The 681 dimension depends on the aspect ratio of the image. I’ll investigate further on this dimension and post results here – maybe tomorrow night.

What happens is this: if the image is wider than 681 it will be scaled to be 681 wide. If it is longer than 681 it will be shortened to become 681. The shape of the image will not be altered, nor will any cropping take place.  So a wide short image will be made to look like a horizontal letterbox and a long narrow image will be made to look like a vertical letterbox and in each of these situations the longest image dimension will be 681.

If the image has no dimension greater than 681 then it will be left untouched by the software and displayed ‘as is’.

Note that the handling of the image depends on the display device. On my Linux machine the image has a + in the bottom right corner. When the image is clicked using the + sign it goes into a separate window. This doesn’t look any bigger. However the + expansion uses the original image which can be downloaded by anyone if desired. On my Android phone I see no + but can use finger expansions to enlarge the image which is more practical.

The images from today’s i newspaper were scanned at various resolutions and saved in one of two formats (jpg and png). They were also processed in GIMP to give greater clarity.

  1. Scan at 600dpi (150dpi is inadequate, 300dpi is poorish and over 600dpi is excessive).
  2. Process the images in GIMP to decolour and then posterise (using only 2 shades). This GIMP stage is not strictly necessary but it creates much cleaner image. Up to you. It probably depends on the original. If it is very ‘tatty’ and has colourations then this stage will help.
  3. Between jpg and png choose png. You can use the most aggressive compression of 9 in png and the results are very good. To get the same sort of results with a jpg you will need to use a compression of 80-90% and the resultant image will be a lot bigger than the png one. NB never use a compression of 0 for png or 100% for jpg or your images will be huge. Note that the compression scales for the two types are the inverse of each other – 0 for png is the equivalent of 100% for jpg and 9 for png is something like 70% for jpg (and any setting under about 30% for jpg compresses the images too much to the point eventually that they become just a blur).
  4. Note that the sites have an upload limit of 10Mb per image.

Bob Stephen (21:15hr  24/07/19) : (18:00hr 25/07/19)

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