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If the subject is 3 m (10 ft) away, what is the pixel density for a 1920x1080 camera?
Suggested Answer: C
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The reason why the camera is not blinded by the headlights is that an IR-pass filter is in use. This filter blocks out visible light, including the bright headlights, and allows only infrared light to pass through. This is particularly useful in nighttime surveillance scenarios where the camera can rely on infrared illumination instead of visible light, ensuring clear visibility even in the presence of bright lights like headlights.
35 comments · newest first
HA
Hayley
11 months ago
162 px/m seems too low for a 1080p camera.
EA
Earleen
11 months ago
Definitely not 576 px/m, that's way too high!
HE
Hermila
12 months ago
Wait, how do we even know the pixel density without more info?
DE
Deonna
1 year ago
I thought it would be higher, but yeah, that sounds right.
LO
Lorrie
1 year ago
It's 324 px/m at that distance!
NO
Noemi
1 year ago
I think the answer is A, 324 px/m. I remember that higher resolutions give more pixels per meter, but I could be mixing it up.
BE
Beckie
1 year ago
I feel like we might need more information about the camera's specifications to get the right answer.
NO
Noelia
1 year ago
This reminds me of a practice question where we had to find pixel density too. I think it was around 162 px/m, but I can't recall the exact details.
MI
Misty
1 year ago
I remember something about calculating pixel density based on distance, but I'm not sure how to apply it here.
RE
Rebeca
1 year ago
I've got an idea on how to solve this, but I want to double-check my work before answering.
CA
Carrol
1 year ago
The information given seems a bit limited, but I'll do my best to come up with a solution.
AL
Alecia
1 year ago
Okay, I think I know the formula to use here. Let me work through this carefully.
KE
Kendra
1 year ago
Hmm, I'm not sure how to approach this. I'll need to think it through step-by-step.
TW
Twanna
1 year ago
This looks like a straightforward calculation, I should be able to figure this out.
TA
Tamar
1 year ago
This question is a real pixel-ache, isn't it? I'm just glad they didn't ask about the megapixel count of a potato.
MA
Madelyn
1 year ago
I'm not sure, but I think the answer might be B) 162 px/m (54 px/ft).
MA
Madelyn
1 year ago
I agree, the pixel density can be tricky. I would go with D) 576 px/m (192 px/ft).
MA
Madelyn
1 year ago
It sure is a pixel-ache! I think the answer is A) 324 px/m (108 px/ft).
MY
My
2 years ago
Okay, let's see... 1920x1080 pixels, 3 meters away. That means the pixel density is gonna be pretty high. I'm gonna go with D, 576 px/m (192 px/ft).
TI
Tiara
1 year ago
Shalon: Maybe we should double-check the calculations before making a final decision
SH
Shalon
1 year ago
User 2: I'm not so sure, but I think it's C) The information is insufficient
BE
Bettina
1 year ago
User 1: Are you sure about that? I think it might be option A) 324 px/m (108 px/ft)
JA
Jaime
2 years ago
I bet the answer is C. I mean, who has time to do all these calculations when you're taking a test, right? Let's just go with the lazy option.
EL
Elke
1 year ago
C) The information is insufficient
CH
Charlesetta
1 year ago
B) 162 px/m (54 px/ft)
BE
Becky
1 year ago
A) 324 px/m (108 px/ft)
ME
Melita
2 years ago
Hmm, the question doesn't mention anything about sensor size or focal length. How are we supposed to figure this out?
ST
Stefania
1 year ago
Yeah, without sensor size or focal length, we can't calculate it accurately.
MA
Maricela
1 year ago
C) The information is insufficient
LA
Lai
1 year ago
I think it's A) 324 px/m (108 px/ft)
DE
Delpha
2 years ago
A) 324 px/m (108 px/ft)
SA
Santos
2 years ago
Wait, are we supposed to calculate the pixel density or the resolution? I'm so confused!
TH
Thad
2 years ago
But how can you be so sure? The information might be insufficient.
OR
Oretha
2 years ago
I disagree, I believe it's D) 576 px/m (192 px/ft)
TH
Thad
2 years ago
I think the answer is A) 324 px/m (108 px/ft)