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How much oranger do red orange bags make oranges look?

alexanderell.is

11–20 of 109 posts

Re: How much oranger do red orange bags make oranges look?

#13

They really don’t look all that different to my untrained eye - in fact I think it looks “better” without the bag. Maybe I’m loco.

Taking another look, I think you're right! Particularly since the first orange is pretty orange already. I think the first example would have been better served with a yellower, less ripe orange to highlight the difference and the pull in the redder, riper direction from the bag.

Re: How much oranger do red orange bags make oranges look?

#14
It makes sense that adding red adds red (in addition to the avocado sacks you mention, I think of lemons’ yellow bags, limes’ green bags, and the red packaging/shelf lining and pink-tinged light in the butcher’s case)—but those images really do look strangely exposed to me.

Did you do exercise any specific control over the phone’s camera?

I wonder if the ring light might use the sort of general-market LEDs that underperform specifically at illuminating saturated reds and oranges in this range… see for example

https://www.canada.ca/en/conservation-institute/services/con...

and

https://indiecinemaacademy.com/are-leds-ruining-your-project...

Re: How much oranger do red orange bags make oranges look?

#15
post #7

Earlier quoted context omitted.

That’s like saying green is a yellower blue. It’s all arbitrary.

The names are arbitrary but the underlying color theory is not. Colors are different wavelengths of light and our eyes have sensors that are sensitive to specific wavelengths.

Most colors are mixtures of wavelengths of light. Our eyes have sensors that are sensitive to specific ranges of wavelengths, with relatively broad overlapping response curves. Orange can refer to a spectral color, but (as you say) the arbitrary nature of the names means it also refers to several mixtures of spectral colors of varying wavelength and intensity. "Brown" doesn't refer to any spectral color, it's always a mixture which could be referred to as a "dark orange".

Re: How much oranger do red orange bags make oranges look?

#16
post #14

It makes sense that adding red adds red (in addition to the avocado sacks you mention, I think of lemons’ yellow bags, limes’ green bags, and the red packaging/shelf lining and pink-tinged light in the butcher’s case)—but those images really do look strangely exposed to me. Did you do exercise any specific control over the phone’s camera? I wonder if the ring light might use the sort of general-market LEDs that under…

That's a good question, and I could easily see the camera settings (and the light) being a source of error here. Naively, I used the default iPhone camera with the same exposure for each one, then ended up manually removing some of the HDR settings from each one when they were showing up as way overexposed on my computer. Not exactly an advanced, scientific technique, and there was also a bright source of soft white light from the window next to the setup, which could have thrown off the automatic exposure.

Another comment mentioned it, but I wonder if the overall effect would be more visible with yellower baseline oranges (or, as you mention, pale lemons and limes). Really interesting about the LEDs underperforming as well!

Re: How much oranger do red orange bags make oranges look?

#17
This is interesting because it shows us how a programmer thinks of a problem vs. how a psychologist or neuroscientist would think of this problem and highlights the lack of "human-ness" in programmer thinking.

I'm no fan of schools forcing STEM students to study boring electives but this is a prime example of why that might be useful.

The entire premise of the post is wrong - average pixel value has nothing to do with how orange the oranges look - it's all about perception.

Here's an example where the same exact color (pixel value) can be perceived as either light or dark depending on the context: http://brainden.com/images/identical-colors-big.jpg

That's what the bag adds - context - but the author hasn't made this connection.

Re: How much oranger do red orange bags make oranges look?

#19

I think the lighting/camera work doesn't help here. The first photo of the orange...doesn't look orange. It's really dark. In the photo from the shop they look orange.

My first thought as well. The author probably has a monitor with not very accurate color, those look almost red.

Re: How much oranger do red orange bags make oranges look?

#20

This is interesting because it shows us how a programmer thinks of a problem vs. how a psychologist or neuroscientist would think of this problem and highlights the lack of "human-ness" in programmer thinking. I'm no fan of schools forcing STEM students to study boring electives but this is a prime example of why that might be useful. The entire premise of the post is wrong - average pixel value has nothing to do wit…

While you are correct about color perception, I don't see the link to a 'lack of humanness in programmer thinking'. It's not an inherent trait to software engineers. The entire field of HCI, interaction design and everything around how we deal with digital colors are fully focused on the human experience.

Maybe a reminder that computer science != programming.

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