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nadia naji


Last seen: bijna 2 jaar ago |  Active since 2012

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curve fitting using min-max optimization
I have a 2D array and I am trying to fit a curve on the data.how can I find the best curve for the data in Matlab? I need to kno...

bijna 2 jaar ago | 1 answer | 0

1

answer

Question


finding the specific value on a curve using matlab
I have two matrix (100,6). one of them contains PSNR values for different bitrate and the other one contains corresponding bitra...

ongeveer 2 jaar ago | 0 answers | 0

0

answers

Question


using Bjontegaard metric in k-means clustering as a cost function
Hello, I am trying to use Bjontegaard metric as cost fucntion in kmeans. I have some RD curve and I want to cluster them based ...

meer dan 2 jaar ago | 0 answers | 0

0

answers

Question


string for x label in a plot
Hello, I have 15 values for x label but they are not consecutive values. for exampl they are bitrate values from 100 kb to 900 ...

meer dan 2 jaar ago | 4 answers | 0

4

answers

Question


legend for multiple plots
Hello, I have 4 matrix with 6 rows and 15 columns. I want to plot all these matrix in on plot. for this aim I used the followin...

meer dan 2 jaar ago | 2 answers | 0

2

answers

Question


show the output of subplot as a full screen show
Hello, I need to show the subplot output as a full screen image but it shows small images in the output. my Matlab version is R...

meer dan 3 jaar ago | 1 answer | 0

1

answer

Question


how do I average each 10 elements of a matrix?
Hi, I have an 80x1 vector and I need to average every 10 elements from first and save them to a new vector. do you have any su...

meer dan 3 jaar ago | 1 answer | 0

1

answer

Question


read each line a text file using Matlab function
I have a text file that each line of it is as follows: n:1 mse_avg:8.46 mse_y:12.69 mse_u:0.00 mse_v:0.00 psnr_avg:38.86 ps...

meer dan 3 jaar ago | 1 answer | 0

1

answer

Question


read each line a text file using Matlab function
I have a text file that each line of it is as follows: n:1 mse_avg:8.46 mse_y:12.69 mse_u:0.00 mse_v:0.00 psnr_avg:38.86 ...

meer dan 3 jaar ago | 1 answer | 0

1

answer

Question


how do I classify image based on smoothness and high frequency?
Hello, I have some blocks of image and I need to find out the block is smooth or is full of edge, but I really do not know how ...

meer dan 3 jaar ago | 2 answers | 0

2

answers

Question


how can i grow a region with connected compoent in other image?
hi i have 2 same images one of them is the mask and binary image the other one is the labeld image that each connected component...

meer dan 11 jaar ago | 0 answers | 0

0

answers

Question


histogram distance or histogram similarity?
hi i extract texture feature from video and build a histogram 1x177 bins i want to find more similar histogram to it from histog...

meer dan 11 jaar ago | 0 answers | 0

0

answers

Question


split video to bocks
hi i have a video and i want to split video to some block which each frame split to 16x16 blocks and each 30 frame i have the tr...

meer dan 11 jaar ago | 1 answer | 0

1

answer

Question


accuracy of svm model on test data?
hi i used svmtrain function to train a model now i want to check the accuracy of model on test data how can i do this with 10-fo...

meer dan 11 jaar ago | 1 answer | 0

1

answer

Question


spliting image to 16x16 blocks
hi i have an image with size 320x240 i want to split it to 16x16 blocks but i don't use for loop. i don't process these blocks a...

meer dan 11 jaar ago | 2 answers | 0

2

answers

Question


making 3d blocks from video
hi i have some video with resolution 320x240 and i want to separate blocks with size 16x16x30 which 30 means 30 sequential frame...

meer dan 11 jaar ago | 0 answers | 0

0

answers

Question


temporal treatment of special row or column of frames in video
hi i have a video and i want to consider the action of sequential frames for special x and all y with that x. this means instead...

bijna 12 jaar ago | 1 answer | 0

1

answer

Question


fill inside an object in binary image
hi i have an binary image that i need to fill inside the object in image if i use imfill function it cant fill the image <http:...

bijna 12 jaar ago | 0 answers | 0

0

answers

Question


problem with centroid of binary image
hi i use bwconncomp and regionprob with centroid feature to find centroid of binary image but i cant understand one thing? if i ...

bijna 12 jaar ago | 2 answers | 0

2

answers

Question


changing the resolution of video frame
i have some videos with different resolution but for some computing reason i need to change the resolution of them to same on fo...

bijna 12 jaar ago | 2 answers | 0

2

answers

Question


what is vlfeat and how made available it?
i use a code in this address for background subtraction <http://www.mathworks.com/matlabcentral/fileexchange/34077-background-re...

bijna 12 jaar ago | 1 answer | 0

1

answer

Question


how optical flow function in matlab work?
i don't write any code myself for optical flow i only use the demo in matlab r2012a to learn what optical flow work. this demo e...

bijna 12 jaar ago | 1 answer | 0

1

answer

Question


how can select a region in image?
hi i need to select a region in image and then save the value of those pixels by using impixel i can choose some pixel by clicki...

bijna 12 jaar ago | 3 answers | 1

3

answers

Question


how transfer ycbcr to rgb?
hi i have a vector with 3 columns that contain y, cb and cr values of ycbcr. when i use ycbcr2rgb function with this vector as ...

bijna 12 jaar ago | 1 answer | 0

1

answer

Question


how can i delete horizontal vector from output in optical flow?
hi i need to delete horizontal velocity vector from output in optical flow is there any way to show special vector from output o...

bijna 12 jaar ago | 1 answer | 0

1

answer

Question


optical flow function in matlab?
hi i need to calculate optical flow. i don't know any matlab versions have function for calculating optical flow? can you help m...

bijna 12 jaar ago | 1 answer | 0

1

answer

Answered
svm rbf kernel parameter?
i understand the default value of sigma is 1 and it is different from scaling factor

bijna 12 jaar ago | 0

Question


svm rbf kernel parameter?
hi what is the default value of sigma in RBF kernel function in svmtrain and where or how can i see the value of it? is it diffe...

bijna 12 jaar ago | 1 answer | 0

1

answer

Question


how can i show the output of 2 clusters in one plot?
I have two clusters of data each cluster has x,y (coordinates) and a value to know it's type(1 class1,2 class 2)I have plotted t...

bijna 12 jaar ago | 1 answer | 0

1

answer

Question


how can i change svm classify output?
hi we know the output of svmclassify function is 1 or -1 but i need to have decimal value for some processing is there any way t...

bijna 12 jaar ago | 0 answers | 0

0

answers

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