Multimedia searching method using histogram

A computer-implemented multimedia searching method using a histogram that expresses feature information of multimedia, comprising:

• uniformly dividing information for expressing the histogram;
• non-uniformly converting the uniformly-divided histogram information according to a specified application;
• and
• performing a multimedia search for the corresponding specified application using the non-uniformly-converted histogram information.

A computer-implemented multimedia searching method using a histogram that respective bin values are expressed by N bits, the method comprising:

• forming a histogram using the bin values uniformly-quantized into 2N as a standard histogram;
• and
• converting the standard histogram into a converted histogram having non-uniformly-quantized bin values corresponding to a specified application by non-uniformly combining the 2N uniformly-quantized bin values;
• and
• performing a comparative search using the converted histogram.

A computer-implemented multimedia searching method using a histogram that respective bin values are expressed by N bits, the method comprising:

• (a) defining the histogram using the bin values obtained by performing a semi-uniform quantization for the bin values of 2N as a standard histogram, wherein the semi-uniform quantization performs a close uniform division for the bin values lower than a threshold value and performs a sparse uniform division for the bin values higher than the threshold value;
• (b) converting the standard histogram into a histogram having non-uniformly-quantized bin values optimized for a specified application by non-uniformly combining the quantized bin values of 2N;
• and
• (c) performing a comparative search using the converted histogram.

A computer-implemented multimedia searching method using a histogram having N bins obtained by dividing a color space into N partial regions, the method comprising:

• defining the histogram obtained by uniformly quantizing the given color space into the N partial regions as a standard histogram;
• converting the standard histogram into a histogram having the bins representing the non-uniformly-quantized color space corresponding to a specified application by non-uniformly combining the bins obtained by uniformly quantizing the color space into the N partial regions;
• and
• performing a comparative search using the converted histogram.

A computer-implemented multimedia searching method using a histogram having N bins obtained by dividing a color space into N partial regions, the method comprising:

• defining the histogram obtained by more closely uniform-quantizing the color space in the regions having a purity lower than a threshold value and by more sparsely uniform-quantizing the color space in the regions having a purity higher than the threshold value as a standard histogram;
• converting the histogram into a histogram having the bins representing the non-uniformly-quantized color space optimized for a specified application by non-uniformly combining the bins obtained by quantizing the color space into the N partial regions;
• and
• performing a comparative search using the converted histogram.