Search found 1674 matches

by jsachs
February 28th, 2019, 7:33 am
Forum: PWP 8 Beta
Topic: Raw image file interpretation
Replies: 4
Views: 92

Re: Raw image file interpretation

The PWP 7 raw converter is derived from dcraw which gets updated by its author, Dave Coffin, on a very irregular basis. When we were maintaining PWP7, we had to take each dcraw update and modify it to fit within PWP which we are no longer doing. Personally, I recommend using a separate raw converter...
by jsachs
February 27th, 2019, 11:25 am
Forum: PWP 8 Beta
Topic: Problems opening 16-bit black and white TIFF images
Replies: 3
Views: 79

Re: Problems opening 16-bit black and white TIFF images

It looks like the problem was being caused by the FastPictureViewer Codec Pack - an application that lets Windows display raw file thumbnails in Explorer.

I would avoid this for now if you are thinking of trying it.
by jsachs
February 27th, 2019, 9:17 am
Forum: PWP 8 Beta
Topic: A question about halftone screens
Replies: 9
Views: 117

Re: A question about halftone screens

The image is the threshold table. The matrix in the earlier posting is normalized to run from 0 .. 255 when used as a threshold table. The basic halftoning algorithm is extremely simple -- the threshold image is tiled to cover the entire input image. If an input pixel is darker than the threshold im...
by jsachs
February 26th, 2019, 4:33 pm
Forum: PWP 8 Beta
Topic: Cloning and saving modifies textures
Replies: 2
Views: 48

Re: Cloning and saving modifies textures

Yes, the Texture transformation generates a new random texture every time you use it. The current algorithm does not permit re-creating a given pattern since it splits the image intro strips and computes them in parallel so there is no way to know what order the pixels are computed in. The CUDA vers...
by jsachs
February 26th, 2019, 7:32 am
Forum: PWP 8 Beta
Topic: A question about halftone screens
Replies: 9
Views: 117

Re: A question about halftone screens

The spiral refers to the order in which the halftone cells are filled as the brightness of the underlying image gradually increases. This is the built-in threshold table for the 10 x 10 spiral: 97, 89, 81, 69, 61, 62, 70, 82, 90, 98, 96, 77, 53, 45, 33, 34, 46, 54, 78, 91, 88, 60, 41, 25, 17, 18, 26...
by jsachs
February 25th, 2019, 6:33 pm
Forum: PWP 8 Beta
Topic: Problems opening 16-bit black and white TIFF images
Replies: 3
Views: 79

Re: Problems opening 16-bit black and white TIFF images

It looks like it's only happening on one of my computers -- must be something I installed on it or something wrong with Windows.
by jsachs
February 25th, 2019, 5:06 pm
Forum: PWP 8 Beta
Topic: Problems opening 16-bit black and white TIFF images
Replies: 3
Views: 79

Problems opening 16-bit black and white TIFF images

I am suddenly having problems reading 16-bit black and white images using PWP (via WIC). It is not recognizing the files as TIFF, but as something else random. I can the images with Photoshop, so I think they are OK, and I'm sure this used to work. I suspect a recent Windows 10 update. Anyone else s...
by jsachs
February 25th, 2019, 7:19 am
Forum: PWP 8 Beta
Topic: Bug fix release 25-Feb-2019
Replies: 0
Views: 46

Bug fix release 25-Feb-2019

I have posted a new release (25-Feb-2019) in full installer and executable-only versions. Minor changes to help file. The changes (taken from the update log) are: Fixed crash when double-clicking on an image file in Windows Explorer to open an image in PWP while PWP was minimized. Export: fixed prob...
by jsachs
February 25th, 2019, 7:14 am
Forum: PWP 8 Beta
Topic: Portrait orientation images re-saved with Landscape orientation
Replies: 3
Views: 73

Re: Portrait orientation images re-saved with Landscape orientation

Yes, same problem. I fixed that as well for the next release.
by jsachs
February 24th, 2019, 7:47 pm
Forum: PWP 8 Beta
Topic: Export -- dpi and Exif:XResolution and Exif:YResolution
Replies: 1
Views: 40

Re: Export -- dpi and Exif:XResolution and Exif:YResolution

Should be fixed for next release. I did not realize ExifTool would copy the dpi setting from the original file, overwriting what I had set when saving the file. Also fixed a problem with the Resample checkbox being grayed out in some cases.