http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-3224319-C2
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04N1-40062 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04N1-40087 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04N1-4055 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H04N1-405 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H04N1-40 |
| filingDate | 1982-06-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1992-12-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1992-12-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | DE-3224319-C2 |
| titleOfInvention | Method and device for determining the type of density level distribution of an image area |
| abstract | A gray level signal processing method determines whether an image signal derived from an original belongs to the drawing image area which requires high resolution or to the image area with continuous tone gradation which requires gray level reproduction such as photographs, and it quantizes the signal in a quantization method suitable for the image area associated with the signal. In the method, a) an image is divided into blocks, each composed of m * n picture elements, b) the maximum and the minimum optical density level (P ↓ m ↓ a ↓ x and P ↓ m ↓ i ↓ n) in each block noted; c) calculates the difference value (P ↓ Δ = P ↓ m ↓ a ↓ x - P ↓ m ↓ i ↓ n) between the maximum and minimum optical density levels; d) the image area to which the block belongs is determined according to the difference value (P ↓ Δ); and e) the optimal quantization processing method is selected according to the determination result. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-4113367-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-3935067-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-4143504-C2 |
| priorityDate | 1981-06-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
| Predicate | Subject |
|---|---|
| isDiscussedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/compound/CID28935 http://rdf.ncbi.nlm.nih.gov/pubchem/substance/SID410793948 |
Total number of triples: 18.