Representing Images in Binary
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- Опубликовано: 16 сен 2024
- Explaining how bitmap images are represented in binary, with the terms pixels, resolution, colour depth and metadata explained.
Made primarily for OCR GCSE Computer Science (J277) Paper 1. If you are following another course, be sure to use the playlists on my channel.
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Got my first exam tomorrow, thank you for all these videos!
My teacher hasn't gone through half of this. we haven't even been taught the unit 2 and i got it in a few weeks
My exam is tomorrow and I don’t know half the course :)
@@hongjhenchang8866 I just had my unit 1. Hopefully unit2 is better. Hope you found it alright
In the edexcel exam though, when they ask about file size for an image - the markscheme seems to want you to use 1024B = KB...not 1000 (which we only use for file transmission speed I think)
@@UnbeatenPlayzMinecraftandmore This video is primarily for OCR GCSE computer science
@@abdullahpatel2120 السلام عليكم ورحمة الله وبركاته
This comment is quite old - hru my brother , excited for Ramadan? I think at the time this video was also in the Edexcel playlist but idk
@@UnbeatenPlayzMinecraftandmore some videos from OCR apply for other specs but his video, although old, covers the latest spec for OCR j277. And yes I am ready for Ramadan inshallah
Great explanation. All in one short video as well.:)
Thank you for this clear explanation.
at 3:45 did you mean to say divide by 8?
Yeah, how weird aha, I must have been looking right at it
Great video tho I was kinda hoping that you give an example (i.e. Sakura pink is 255,183, 179 in RGB Decimal is to what in binary).
Actually no need since I already searched for it as 111111111011011110110011 . But what I´m curious now is how the .dat file? or file containing these binary data would possibly look like. Would it be similar to an Excel file with rows and columns for each pixel in binary.
Anyways, thanks for the video. Funny how studying science makes me interested in the details behind man-made things
Sakura
Can you go into detail with pseudo code and the logic of answering an exam question on it please. Your videos are amazing by the way. Thanks x
Thanks! I’ll try and make one (it’s on my to do list 👍). The most salient point would be not to worry about it though!
Thank you for your explanation and effort and I am asking for a good presentations as yours. I am from a developing country. It is the first time to teach this curriculum in my country, so please I need your help to get presentations as yours if it is possible. Thanks very much.
THANKYOU so much !!!!
do we need to know vector images?
What sort of stuff are we going to learn in A-level computer science OCR ?
(It's okay if you don't know by the way, just wondering :3 )
Basically the same topics, just in more detail (it’s more interesting!) 😁
Cool! :D
Also does CS touch on 3D modelling at all?
I am really interested in it but the school doesn't care at all D:
Oh nice, the closest topics in CS are probably computer vision and parallel programming which are probably only covered at uni unfortunately - though don't let that put you off looking into it yourself! If you're interested in the programming side of it, and have an NVIDIA GPU, you could have a look at CUDA, which would be used for intensive applications like modelling
I'm using blender atm, went through a bunch of courses on udemy and after the exams will buy subscription for the cgcookie.com/course/modeling-realistic-characters-with-blender course , and maybe when I will feel kinda mad I will get this bad boy :3dclassroom.cgmasteracademy.com/elective/2136
I think that it will end up with me only dreaming about making something even close to similar... but I will have hope :)
Hopefully the study at uni will help me with my career :D
Could u do a video possibly explaining trace tables
As they carry quite a lot of marks in the exam
halo786123yy exam in two days won’t be able to in time
Jus start with the first input and keep going through the code filling in values when they change
Is metadata is known also as file header
please can you confirm whether black is 1 in binary and 0 is white. as i thought it was the other way round?
There isn't any need to worry, as in the exam you will always be told which value represents each colour.
Ben Doy oh okay I understand. Thanks!
cheers
ur welcome
damn im sad
I don't get it, isn't 0 off so black, and 1 on so white, cause in video u wrote 0 Is white and 1 is black
it doesn't matter which way around it is.
3:46
2 days left guys
Why is this in Paper 1 and 2
Some exam boards overlap topics (AQA mostly) -- I'd recommend checking the specification if you have any doubts about this kind of thing
Pls bro
Hiiiiiiiii
Reduce the talking speed.
no, its perfect or just slow the video down
Literally 15 min squad rn...
how did it go??
@@hassanziyara1214 How did what go?
3:48