Why when the V (value) is set to 0 I still see the color blue?
https://preview.redd.it/ywawahj96iy31.png?width=1920&format=png&auto=webp&s=6fa9c6bb7e2666cc2b0bc64d736a5f7184733ed0
Even though the value is the intensity of the color. So if the value is 0, it should be black!
This is the code:
I'd like to draw something in vaporwave style but I need to understand how to create this kind of color using the HSV bars
Hi guys, how to create a gradient palette using HSV values?
Meaning, I want the granular benefits of DEFINE_GRADIENT_PALETTE() where I can state which 0-255 index has what color, but I do not want to use non-intuitive RGB values.
Note: I tried using hsv2rgb_rainbow() conversion, but it quickly got complicated because DEFINE_GRADIENT_PALETTE() didnt compile unless it was placed outside a void function, yet hsv2rgb_rainbow() had to be placed inside one. And in the end the colors where not the right ones, so I'm thinking there must be a better way than what I tried?
The HSV color model is a model that resembles how humans perceive color.
To gain insight on what exactly is this model and how it differs from the conventional RGB model, check out the new video where I go through the basics of HSV model and its relationship with the RGB model !
Feedback, if any is highly appreciated
https://youtu.be/fLFx6bnf1oA
i want them to keep their random color that they have now, but to grayish them a bit, make them a bit more dead looking/gray/dull/plain/lifeless
right now theyre too strong colors and hurting in the eye
theyre set in RGBA color but i believe i can access HSV somehow, ideal would be decreasing the S and V values for them so its a bit more grayish and darkish/plainish
OF COURSE I MEAN IN CODE
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Thanks!
Hi,
everyone,
I use the
cvtcolor(scr,dst,color_bgr2hsv);
to get the hsv color space from the original image;
I assume that s channel and v channel values should not be larger than 100;
however, I got a bunch of number range with 101-255.
I mean s and v should be the percentage number which should be in 0-100 right?
here is how I print them out:
unsigned char *input = (unsigned char*)(dst.data);
for(int i = 0;i < dst.cols;i++){
for(int j = 0;j < dst.rows;j++){
std::cout<<(int) input[dst.cols * j + i+ ]<<(int)input[dst.cols * j + i+1 ] << (int)input[dst.cols * j + i+2 ]<<endl;
}
}
could not figure out where it goes wrong!
a little help here please!
thanks a ton
I am trying to implement color detection with colors of m&m candies, I wanted to follow the route where I hardcode upper and lower HSV bounds. All the other colors (red,green,blue,orange,yellow) are okay since their hue values are different, but I can't choose suitable bounds of "brown" even though I played around with the color charts. When I show a brown object it either doesn't get recognized or gets treated as a darker orange.
Please help me find good HSV values for brown. I've been trying for a long time now. Thank you. Here are my other values for reference:
low_orange = np.array([10, 100, 100])
high_orange = np.array([18, 255, 255])
low_yellow = np.array([25, 100, 100])
high_yellow = np.array([33, 255, 255])
low_blue = np.array([93, 100, 100])
high_blue = np.array([126, 255, 255])
low_green = np.array([39, 100, 100])
high_green = np.array([102, 255, 255])
low_red = np.array([161, 100, 100])
high_red = np.array([179, 255, 255])(ok not "today" but recently)
It's your standard HSV color picker. This one is written in typescript.
https://github.com/mrkite/colorpicker
I'm particularly happy with how the hue ring turned out since it's drawn pixel-by-pixel and anti-aliased.
The hue ring is drawn to an offscreen ImageData buffer at creation, and then as you adjust the hue, it simply overwrites the live canvas with the offscreen buffer and then draws the updated Hue/Value block and the little selection handles on top.
It was originally part of a larger project but seemed useful enough to spin into its own standalone project.
So, I was trying to make some fireworks of random colors for a game using particles, but they were often getting too dark using RGB. I remembered that I could use a random hue and keep saturation and value at maximum to get the effect I wanted, but Godot doesn't have a way to create a color from HSV values (even though it says so on the docs). I did a little digging on the internet and managed to adapt an algorithm I found for another language and it worked wonders, so I thought I'd share it here in case anyone else needs it.
func hsv_to_rgb(h, s, v, a = 1):
#based on code at
#http://stackoverflow.com/questions/51203917/math-behind-hsv-to-rgb-conversion-of-colors
var r
var g
var b
var i = floor(h * 6)
var f = h * 6 - i
var p = v * (1 - s)
var q = v * (1 - f * s)
var t = v * (1 - (1 - f) * s)
match (int(i) % 6):
0:
r = v
g = t
b = p
1:
r = q
g = v
b = p
2:
r = p
g = v
b = t
3:
r = p
g = q
b = v
4:
r = t
g = p
b = v
5:
r = v
g = p
b = q
return Color(r, g, b, a)
I don't know exactly how it works, but I can assure it does haha
I am an art teacher and I'm currently putting together a lesson about spaces and expressive uses of color. I have plenty of examples of art from the modern period, but I'm struggling to find contemporary examples. I'm curious if anybody knows of artists I could look into, especially if they are artists of color.
Just to give some examples of what I mean:
Bedroom in Arles by van Gogh
Red room - Matisse
The Green Bridge by Lyonel Feninger
Lake George Reflection - Georgia o'keefe
Doesn't need to be a painting either. I've already considered James Turrell, just looking for a few more options.
(V-HSV on the left, HSV on the right)
https://preview.redd.it/evj0hs3konp31.png?width=525&format=png&auto=webp&s=be7153bb5991636ef3ca42f709817fefcd7bde73
I noticed an option under Window>HSV/HSL Mode for 3 options, including HSV and HSL, as well as an already selected option of V-HSV. I wondered what the difference was between HSV and V-HSV, and it seems that HSV has a more stable gradation of saturation. Thought I'd post about this, sense I never thought about it until I stumbled on this setting, and I'm honestly liking the alternative mode over the one preselected.
Also, there seems to be this weird diagonal line on the V-HSV color wheel.
So I just watched the 2019 film adaptation of Lovecraft's Color Out of Space and let me just say holy shit.
Nicolas Cage of course puts on his best performance but the story isn't lost in his overacting at all. The tone was overall creepy, which is really all I ask for from horror movies these days and the little easter eggs with the books like Necronomicon and the Willows were brilliant. Tommy Chong did very well in a true horror; I've wanted to see him in a different genre for a while and he did great. Last technical horror I've only seen him in was the Evil Bong movies (gotta give a shout-out to my buddy Brockton Mckinney for bringing us those films.) I give it a 9/10 on my grading scale. Others might not give it the same rating but, hey, it's opinion based.
Trying to recreation Volcano Orange, but H29 is green, not orange as it is everywhere else I look.
Wow. If we can get more indie horror like this, I want it all. It’s like they took a note from Rob Bottin for the incredible effects and Panos Cosmatos for the Nic Cage insanity. I loved this movie, even if it was FUCKED. What’s everyone else’s feeling towards it?
And that you could use any colors you'd want.
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