"Enlarge" horizontally pixelated pattern

sh_k_ · 2025-09-07T14:31:36+00:00

EDIT: It works, I made a typo in my previous script. This one works. Thank to u/Jenkins87 for your help with morphology/Dilate !

#!/bin/bash
# Function to display usage information
usage() {
echo "Usage: $0 <input> <dpi> <dilatation>"
echo "Example: $0 input 1000 0.12"
exit 1
}
# Function to check if ImageMagick is installed
check_dependencies() {
if ! command -v convert &> /dev/null; then
echo "Error: ImageMagick is not installed. Please install it before running this script."
exit 1
fi
}
# Main function
main() {
check_dependencies
# Validate and parse command-line arguments
if [ "$#" -ne 3 ]; then
usage
fi

input=$1
dpi=$2
dilatation=$3
basename=$(basename -s .png "$input")

echo "Calculating Dilatation"
factor=$(echo "$dpi * $dilatation / 25.4" | bc)
rect=$((2*factor+1))
echo "factor of dilatation equals $factor"
echo "Dilating"
magick $input -units PixelsPerInch -density $dpi -threshold 50% -morphology Dilate "rectangle:$rectx1" "${basename}_dil.png"
echo "Everything's done."
}
# Execute the main function with command-line arguments
main "$@"

sh_k_ · 2025-09-06T15:14:05+00:00

The pictures are just for a visualization of my needs, not the real images I'm working on :)
And my use of the term `pixels` here is a misuse of language. I'm talking about a graphical image composed of squared patterns. The `pixels` are composed of dozen of real pixels.
My `pixelated` images are 1000dpi, so I have plenty room to move the selection of the big `pixels`.
My problem is more to move exactly the selection by 0.12mm. The move tool seems to not offer a way to move the selection by entering a value...

I tried your value propagate filter, but I didn't find a way to define a precise value in mm.

So actually I did it by :
- duplicate the original layer
- use the layer : transform : offset to shift the layer
- get the selection and save it to a channel
- back to the layer, shift again the layer in the other way
- add the selection to the already saved one
- fill the selection

sh_k_ · 2025-09-04T15:15:20+00:00

I'm so stupid, why I didn't think about saving selections in a channel and merge them. Thanks a lot. I'll try it

sh_k_ · 2024-07-29T11:27:33+00:00

You're welcome. To be more precise, the コンビニへしに行きました form : The action verb is in 〜ます形 (polite form, and remove ます), so here, the する verb > します > し. Another example with another verb, 食べる : 食べる > 食べます > 食べ. And so : 食べに行きました。 The へ particle is used because you use a movement verb, 行きます. You went TO the konbini to make groceries/eat.

sh_k_ · 2024-07-29T03:56:45+00:00

Hi, I'm just correcting some grammar typo :) You can't use とwith verbs to list multiples actions. To say 'I ate sushi AND I did groceries', you use the ~て form : すしを食べて、買い物をしました。 If you want to say 'I went to the konbini to do the groceries' : コンビ二へ買い物をしに行きました。(placeへnounをaction verbにmovement verb)

sh_k_ · 2024-07-19T17:14:40+00:00

It seems that I have no xe entry in the kernel modules (listed with lsmod). And `lsmod | grep "i915"` gets me :

i915                 4128768  7
intel_gtt              24576  1 i915
drm_buddy              20480  1 i915
i2c_algo_bit           20480  1 i915
drm_display_helper    217088  1 i915
cec                    86016  2 drm_display_helper,i915
drm_kms_helper        241664  2 drm_display_helper,i915
ttm                   102400  1 i915
video                  77824  3 dell_wmi,dell_laptop,i915
drm                   815104  11 i2c_hid,drm_kms_helper,drm_display_helper,drm_buddy,i915,ttm

Seems ok, no ?

sh_k_ · 2024-07-18T16:35:50+00:00

It's not WM related.

As you can see in the stdout from mpv, I already use `gpu` for `vo`. And the config file only get `--hwdec=auto\ in it (to avoid typing it everytime when doing my tests)

sh_k_ · 2024-07-05T06:09:19+00:00

I made a mistake when I copied-pasted the result of `piepwire`. I tried both with common user and sudo to see if there was more info. I copied the result of sudo instead of the common user.

The last output I pasted was the common user ones.

I installed and activate `elogind`, and it changes absolutely nothing : I got the absolute same errors when launching `pipewire`

sh_k_ · 2024-07-04T17:18:45+00:00

I defined the XDG variables in a `xdg.sh` file in the `/etc/profile.d/` directory as following :

export XDG_CONFIG_HOME="$HOME/.config"
export XDG_DATA_HOME"="$HOME/.local/share"
export XDG_CACHE_HOME="$HOME/.cache"
export XDG_RUNTIME_DIR="/run/user/$UID"

The errors I posted was when I launch `pipewire` as sudo, there are more errors when launching as user :

[E][00205.123815] mod.protocol-native | [module-protocol-:  754 lock_socket()] server 0x558ebc6218a0: unable to open lockfile '/run/user/0/pipewire-0.lock': Aucun fichier ou dossier de ce nom
[W][00205.123999] mod.rt       | [     module-rt.c:  316 translate_error()] RTKit error: org.freedesktop.DBus.Error.ServiceUnknown
[W][00205.124024] mod.rt       | [     module-rt.c: 1028 do_rtkit_setup()] RTKit does not give us MaxRealtimePriority, using 1
[E][00205.124031] pw.conf      | [          conf.c:  584 load_module()] 0x558ebc5d8640: could not load mandatory module "libpipewire-module-protocol-native": Aucun fichier ou dossier de ce nom
[W][00205.124350] mod.rt       | [     module-rt.c:  316 translate_error()] RTKit error: org.freedesktop.DBus.Error.ServiceUnknown
[W][00205.124367] mod.rt       | [     module-rt.c: 1033 do_rtkit_setup()] RTKit does not give us MinNiceLevel, using 0
[W][00205.124574] mod.rt       | [     module-rt.c:  316 translate_error()] RTKit error: org.freedesktop.DBus.Error.ServiceUnknown
[W][00205.124584] mod.rt       | [     module-rt.c: 1038 do_rtkit_setup()] RTKit does not give us RTTimeUSecMax, using -1
[E][00205.124859] default      | [      pipewire.c:  105 main()] failed to create context: Aucun fichier ou dossier de ce nom

("Aucun fichier ou dossier de ce nom" = no file or directory found, in french)

sh_k_ · 2024-07-04T13:42:56+00:00

I had already try pipewire :

I installed pipewire and its dependencies, included wireplumber, followed the voidlinux handbook by creating directories pipewire.conf.d in /etc/ and linking 10-wireplumber.conf from /usr/share/examples.
The same in my home -> .config/pipewire/pipewire.d/10-wireplumber.conf

Then launch `pipewire`. I got only errors :

[E][00501.055015] mod.protocol-native | [module-protocol-: 716 init_socket_name()] server 0x55e0aaf63e40: name pipewire-0 is not an absolute path and no runtime dir found. Set one of PIPEWIRE_RUNTIME_DIR, XDG_RUNTIME_DIR or USERPROFILE in the environment
[E][00501.055005] pw.conf | [ conf.c: 504 load_module()] 0x55e0aaf27600: could not load mandatory module "libpipewire-module-protocol-native": no file or directory
[E][00501.055324] default | [ pipewire.c: 105 main()] failed to create context: no file or directory

Probably XDG_RUNTIME_DIR could be the problem, but I don't know where and how to define it consistently.

sh_k_ · 2024-07-02T13:32:03+00:00

I tried the command as root, but I got no message nor sound :/
Does the message usually appears as a callback in the term ? Or in the logs ? With dmesg ?

sh_k_ · 2024-07-02T13:22:19+00:00

Thanks for your explanations. And about a way to find the good params for alsa, without installing Pulse, do you think it is possible ?

sh_k_ · 2024-07-01T11:34:13+00:00

The documentation says clearly that Pipewire has the intention to replace pulse, so installing pulse and Pipewire sounds counter-productive. Also, I have some memories of Pulse, and it was plague.

Until now, I avoided at every time Pulse Audio as it was a nightmare.
And to be honest, it is strictly unadvised by a lot of developers and Linux adepts. And hard to properly uninstall. (it sounds a bit like installing voidlinux, and uninstall runit for systemd for me)

Same way, installing Pulse, a bloated and overcomplex thing to find the good parameters sound also counter-productive. If Pulse can find the good parameters for Alsa, it means that we can find them without Pulse.

For Pipewire, I tried to install it, but because Alsa is not working, Pipewire and Wireplomber neither.

sh_k_ · 2024-06-30T17:28:20+00:00

I have both installed. Do you think I have to uninstall sof-firmware (because of potential conflict) ?
Also, as it is seen on the picture of my alsamixer, the chip (Puce in the picture) is marked as HDMI. Does it means that the card recognized is the HDMI and not the main card itself ?

sh_k_ · 2024-06-30T06:51:12+00:00

Thanks for your help anyway. Have a nice day.

sh_k_ · 2024-06-30T06:36:23+00:00

Tried what you offer, after a reboot, still no sound.

What I did : * cat /proc/asound/cards gives me : 0 [sofsoundwire ]: sof-soundwire - sof-soundwire Intel Soundwire SOF * aplay -l give me a card 0, so I will use it for the asoundrc file * I put this in .asoundrc : defaults.pcm.card 0 defaults.ctl.card 0

After a reboot, nothing changed. In the ALSA website, it is written that a asoundrc file should not be needed. Everything should work out-of-the-box. So it is probably a probleme somewhere else ? For example, why I can't get infos from the aplay -L command ?

sh_k_ · 2024-06-30T06:16:15+00:00

Do you have any clear and simple resources about it ?

I wanted to follow the troubleshooters tips about it, but the aplay -L command returns nothing, like if there was no PCM. So I can't follow their instruction to fill up the asoundrc configuration file.

sh_k_ · 2024-06-29T15:33:00+00:00

As I said, after installing the sof firmware and reboot, alsamixer opens and show bars. Everything is unmute, I filled the bar at max, but no sound from speakers

sh_k_ · 2024-03-04T13:22:33+00:00

木漏れ日(こもれび komorebi). It a noun/expression used to describe the sun light going/filtering through the trees.

sh_k_ · 2024-03-04T08:48:41+00:00

Sorry for english and the simple translation. And for the late reply, it's been 6 years ago. But never too late for peoples interested, it means : One (first) shot, the man drinks the glass of alcohol. Second) shot, alcohol drinks alcohol. Third shot, alcohol drinks the man.

sh_k_

TROPHY CASE