matlab - MPEG-1 compression - producing macroblocks -

-

I'm stuck with a basic problem in my MPEG-1 compression I'll have to build macroblocks within an image The macroblock consists of 16 x 16 pixels - where 4x8x8 flash, 1x8x8cb and 1x8x8cr. In MATLAB, I want to create a cell matrix containing this. Any suggestions?

It looks like you have your various 8-by -8 matrix one In single variable. In some ways you can do this (the first option that I choose for your case):

  • Adding data to 3-D matrix:

    You can use the function to stack the matrix of the same size with a given dimension. For example, if your 4 8-by-8 luminesense matrix in <4> <8> , L3 in your variable> , And L4 , the following will insert them into a 8-by-8-by-4 matrix: 

      luminance = cat (3 , L1, L2, L3, L4);

    You can add additional CB and Cr matrix to create an 8-by-8-by-6 Matrix: 

      macroblock = cat (3, L1, L2, L3, L4, CB, CR); % # Or ... macroblock = cat (3, glow, cb, cr);

    By using the luminance variable above you can macroblock to access the following 8-by-8 matrix in the following way You may want: 

      L2 = macroblock (:,:, 2); % # Second Luinance matrix c = b = macroblock (: ,,, 5); Receive CR matrix

  • Storing data in a cell array:

    Since all of your metrics are the same size, the above mentioned insertion option might be the most Well, though, another option (which is especially useful if you want to store different size, type or dimension data) is to use. Creates a 1-by-6 cell table containing the matrix above: 

      macroblock = {l1l2l3l4cb}};

    You can index macroblock in the following essential ways to access the following 8-by-8 matrix: 

      L2 = macroblock {2}; % # Second, Luine's matrix c = b = macroblock {5}; Get CD Matrix

  • Storing data in a structure:

    Use one more option to store your 8 The advantage of a structure of the matrix-to-8 is that you can access the by field name data as a protest to remember the index value. Here is the macroblock = straight ('L1', L1, 'L2', L2, 'L3', L3, 'L4', L4, 'CB'): 

      CB, 'CR', CR); % # Or ... macroblock =) (); Macroblock.l 1 = l1; Macroblock.l2 = l2; Macroblockl3 = l3; Macroblock.l4 = l4; Macroblock.cb = CB; Macroblock Cr = cr;

    The above two syntax, field names 'L1' , 'L2' , 'L3' , 'L4' , 'cb' , and 'Cr' . You can make macroblock pointer to reach the following 8-by-8 matrix in the following manner: 

      L2 = macroBlock.L2 ; % # Second Luinance Matrix CB = Macroblock CB; Get% CB metrics

Comments

Post a Comment

Popular posts from this blog

c# - How to capture HTTP packet with SharpPcap -

-
I would like to capture all incoming HTTP packets on my machine. To do this, I am using SharpPcap which is a WinPcap The cover is. SharpPcap works very well, but it captures TCP packets and what it wants to do for me is a very low level. Does anyone know how can I easily get full HTTP requests / reactions from all these TCP packets? Thanks SharpPcap is already able to capture the packet in the same way That's what the virus does (just in the code instead of the GUI). And you can either either parse them directly or you can put them in the drive in the common .pcap file format. The steps to parse the capture are: Open a connection at any time Loop a while Or start capturing using an event callback Parsing the raw packet for the type you want If you are reading .PPP dump files In addition to calling you an offline capture reader is almost the same, there is no need to select an interface, and you can set the majority There is no need to do the modes. All st
Read more

jquery - SimpleModal Confirm fails to submit form -

-
I am trying to confirm jQuery to show yes / no confirmation when I submit a form. I had modified (in the last list) to capture and block form submissions. However, it only works with jQuery 1.2.6, a recent upgrade stops 1.3.2, if yes is clicked, then by submitting the form. But I can not understand what is wrong / inconsistent in my code now. Demo (which works in both versions of a simple window.href implementation). $ (document) .ready (function () {$ ('input.delete'). Click (function (e) {e.preventDefault (); var target = $ (e .target); Confirm ("Really delete this event?", Function () {target.click ()});});}); How about something like this? The idea of ​​catching clicks (and fire!) On the submitted event is not click event. $ (document) .ready (function () {$ ('# myForm'). Submit (function () {var f = this; Confirm (" Remove? ", Function () {$ (f). Submit ();}) Return; Return the initial session;}}}}; Hope That this is som
Read more

php - Multiple Select with Explode: only returns the word "Array" -

-
By using Wordpress I have created a multiple selection box so that users can select categories to exclude. When the page is initially loaded, I see my predefined default option. However, when I select a new value and I save ... I only see the word "Array" and have not chosen anything else? & lt; Class = "amultiple" id = "& lt; php echo $ value ['id'] ;? gt;" name = "& gt; php echo $ value ['id'] ;; gt; []" Multiple = "multiple" size = "8" & gt; & Lt ;? Php global option; Foreign currency ($ value as value $) {if (get_settings ($ value ['id']) === FALSE {$$ value ['id'] = $ value ['std']; } And {$$ value ['id'] = get_settings ($ value ['id']); }} $ Ranges = & amp; Amp; Categories ('type = post & orderbiz = name & amp; hide_empty = 1'); If ($ ranges) {$ ex_cat = implode (',', $ tt_cat_exclude); Forex Currency ($ range a
Read more