How can Apple reduce image size so much and contain its quality?
For example:
http://images.apple.com/v/ipad/home/y/images/home/accessories_xlarge.jpg
This is a 2560x800px big image in just 218kb, and the image quality is good!
I've try some tools like https://tinypng.com/, it can do huge optimization, but it will reduce images quality.
So I still can't figure out what tool Apple uses, please help me out~~~
Thank you very much!
(And please forgive my poor english > <)
Related
I am currently using Unity 2013 p3. The problem is, when I build my project in android, the app apk size is about 29mb. And the installed app size in android is about 76mb.
Once the size was very huge, but after searching unity forums, as mentioned here, I altered the configuration settings under Project setting -> player, and changed the device filter to ARMv7. The size has been considerably reduced then. It resulted in the above mentioned metrics which is yet too large.
I tried reducing the size by compressing images that are used in the project, by using the image compression option available in unity as mentioned here. The apk size is reduced somewhat, but the image quality became low comparatively.
Now I don't know any other way to reduce app size without affecting the quality. Can anyone help me with this issue?? Thanks in advance :)
You should use compressed sounds, low poly models, set image quality to normal. Don't use unnecessary references to prefabs. Hope this will work for you!
I am currently working on an iOS game and the image resources seem to be a little too much. I heard of webP and wanted to know more about it.
I did some researches on webP and know that this new format requires much less space than PNG and its encoding/decoding speed is fast. But I found no article discussing the GPU burden when using WebP pictures, compared to PNG ones.
Is there any article out there on this topic?
Or can I do the experiment myself? I am coding in VS using cocos2d-x. I don't know what to do if I want to simulate an iOS GPU and monitor its memory usage.
Many thanks!
You can assume that the textures generated remain the same, ie render at the same speed, using the same amount of memory.
If you want faster loading and rendering and less memory usage, use the .pvr.ccz format.
Does using libraries like OpenEars will drastically enlarge my app size? Or I can just extract the text to speech stuff, and get away with it...Probably removing all those langs? I don't have any idea.
I checked and OpenEars sample app is 33MB - which is big!
So my question is - can I implement text to speech in my app without compromising the size so much? I mean I can live with 2-3 MBs but 30...
Thank you!
OpenEars developer here. Just follow the instructions here to reduce your final app size, there's no need to ship all the voices or any features of the framework that you aren't making use of. Depending on which voices you're using and which feature, you might see an app size increase of between 6 megs and ~20 unless you're using a large number of the available voices. The sample app uses all of the framework features and two voices, and supports a few iOS versions, so its binary size reflects that.
My guess is you can't, audio will take up a lot of space.
Removing unneeded language will free some space but 2-3 mb for all the audio guess that isen't really possible.
I am having an example of OCR from github. But quality of text is very low. How to improve text quality....please help me soon. Thanks in advance.
Will you be able to afford a commercial OCR engine on iPhone, such as ABBYY? Otherwise, server-side OCR is always an option if the user does not mind the delay. It has an added advantage that you can peek into your user's images - but tread carefully - don't break laws and make sure your user license conveys what you're going to do with those images.
I want to develop an iPhone application that is going to convert some sort of images to text formats. I want to know that is there any built-in library for achieving this purpose?
I suppose you are asking about recognizing text from images (OCR) and not about something like encoding image file into base64
There's no build-in OCR libraries in iPhone.
Depending on your budget and what accuracy you trying to achieve, you can try
Commertical OCR - MSDK from ABBYY http://abbyy.com/mobileocr/iphone - high accuracy, customer support, etc. but costs money. Disclaimer: I work for ABBYY
Open Source OCR - Tesseract http://code.google.com/p/tesseract-ocr/ - completely free, but less accurate. This sample shows how to run it on iPhone: https://github.com/nolanbrown/Tesseract-iPhone-Demo
I have used tesseract. Its accuracy ranges from 0-100% depending upon various factors like how well the image is captured,fonts and color of the text etc.
But it can give you very good result if you have a very clear image with very clear text.